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The PLANT cell has a cell wall, chloroplasts, PLASTIDS, and a central vacuole—structures not found in ANIMAL cells. Plant cells do not have lysosomes or centrosomes.

ANSWER:

CHEMICAL and physical CHANGES take PLACE in NATURE

ANSWER:

Here is your answer...

GLUCAGON is not DERIVED from cholesterol.

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TIME LAGEGA are yarr google se SEARCH kar lo

Answer:

HELLO MATE

Good morning

question paper for which CLASS

Answer:Veins carry BLOOD from tissues and carry it back to the heart

Explanation:Veins contains pockets valves and they mostly carry de OXYGENATED blood but PULMONARY vein carry oxygenated blood from LUNG to left ATRIA

ANSWER:

in. .HUMAN NEURON ID THE LARGEST CELL KG OF THE BODY

Answer:

Trigeminal NERVE is a mixed nerve CONSISTING of both the MOTOR and SENSORY fibres but mainly it's sensory. It is the 5th CRANIAL nerve. ... It's a motor nerve to the muscles of mastication and many small muscles and the main sensory nerve of the head and face.

ANSWER:

Because if they kept open they can burn and if they kept in water they can react with water. So, they are kept in kerosene. SODIUM and POTASSIUM are the most reactive METALS on this earth. They react very EXPLOSIVELY with both water and air that is why they are stored in kerosene instead.

ANSWER:

PRESSURISED is the MEANING of deperresed

Answer:

the global warming can be reduced by :

i) PLANTING more trees.

ii) REDUCING the burning of fossil fuels.

5 advantages of NUCLEAR ENERGY are:

i) primary source in any sector.

ii) powerful and efficient.

iii) relliable.

iv) cheap source of electricity.

v) easy transportable.

vi) can be placed almost everywhere.

vii) absence of EXHAUST gases.

EXPLANATION:

CHARGE on ALPHA PARTICLE is He^2

=2×1.6×10°C

=3.2×10°C is the answer

Hope this HELPS you....

Answer:

Science education is the field concerned with sharing science content and process with individuals not traditionally considered part of the scientific community. The LEARNERS may be children, college students, or adults within the general PUBLIC; the field of science education includes work in science content, science process (the scientific method), some social science, and some teaching pedagogy. The standards for science education provide expectations for the development of understanding for students through the entire course of their K-12 education and beyond. The traditional subjects included in the standards are physical, life, earth, space, and human sciences.

The first person credited with being employed as a Science teacher in a British public school was William Sharp who left the job at Rugby School in 1850 after establishing Science to the curriculum. Sharp is said to have established a model for Science to be taught throughout the British Public Schools.[1]

The next step came when the British Academy for the Advancement of Science (BAAS) published a report in 1867.[2] BAAS promoted teaching of "pure science" and training of the "scientific habit of mind." The progressive education movement of the time supported the ideology of mental training through the sciences. BAAS emphasized separately pre-professional training in secondary science education. In this way, future BAAS members could be prepared.

The initial development of science teaching was slowed by the lack of qualified teachers. One key development was the founding of the first London School Board in 1870, which discussed the school curriculum; another was the initiation of courses to supply the country with trained science teachers. In both cases the influence of Thomas Henry Huxley was critical (see especially Thomas Henry Huxley educational influence). John TYNDALL was also influential in the teaching of physical science.[3]

In the US, science education was a scatter of subjects prior to its standardization in the 1890s.[4] The development of a science curriculum in the US emerged gradually after extended debate between two ideologies, citizen science and pre-professional training. As a result of a conference of 30 leading secondary and college educators in Florida, the National Education Association appointed a Committee of Ten in 1892 which had authority to organize future meetings and appoint subject matter committees of the major subjects taught in U.S. secondary schools. The committee was composed of ten educators (all men) and was chaired by Charles Eliot of Harvard University. The Committee of Ten met, and appointed nine conferences committees (Latin, Greek, English, Other Modern Languages, Mathematics, History, Civil Government and Political Economy, and three in science). The three conference committees appointed for science were: physics, ASTRONOMY, and chemistry (1); natural history (2); and geography (3). Each committee, appointed by the Committee of Ten, was composed of ten leading specialists from colleges and normal schools, and secondary schools. Each committee met in a different location in the U.S. The three science committees met for three days in the Chicago area. Committee reports were submitted to the Committee of Ten, which met for four days in New York, to create a comprehensive report.[5] In 1894, the NEA published the results of work of these conference committees.[5]

According to the Committee of Ten, the goal of high school was to prepare all students to do well in life, contributing to their well-being and the good of society. Another goal was to prepare some students to succeed in college.[6]

This committee supported the citizen science approach focused on mental training and withheld performance in science studies from consideration for college entrance.[7] The BAAS encouraged their longer standing model in the UK.[8] The US adopted a curriculum was characterized as follows:[5]

Elementary science should focus on simple natural phenomena (nature study) by means of experiments carried out "in-the-field."

Secondary science should focus on laboratory work and the committee's prepared lists of specific experiments

Teaching of facts and principles

College preparation

The format of shared mental training and pre-professional training consistently dominated the curriculum from its INCEPTION to now. However, the movement to incorporate a humanistic approach, such as inclusion of the arts (S.T.E.A.M.), science, technology, society and environment education is growing and being implemented more broadly in the late 20th century (Aikenhead, 1994). Reports by the American Academy for the Advanc

Answer:

EXPLANATION:

Your search - position - positeon Distance Distance . of position of blw blw lens Height Magni optical of ... - did not match any documents.

Suggestions:

MAKE SURE that all words are spelled correctly.

Try different KEYWORDS.

Try more GENERAL keywords.

Try fewer keywords.

ANSWER:

Explanation:

Deflazacort medicine is a corticosteroid that is used to treat INFECTIONS. ... Am I DEPRESSED? ... Your pharmacist will give you a blue 'Steroid Treatment Card'. ... Your doctor or pharmacist will tell you how many tablets to take for each dose. ... It ALSO contains DETAILS about your dose, how long you have been ...

Explanation:

As winter descends, trees in temperate and boreal zones face punishingly cold temperatures and frigid winds, conditions that would damage leaves, so trees have to reduce themselves to their toughest parts—stems, trunks, branches, bark. Leaves must fall.

Evergreens can HANG on to their leaves through winter, because their foliage is coated in a wax that helps PROTECT against cold, and their cells bear anti-freeze chemicals that ward off winter’s worst woes. Not so for broadleaf, or deciduous, trees. The fluids that flow through their leaves are THIN and susceptible to freezing, the tissues tender. Winter cold dooms the leaves, and trees save energy by getting rid of them. Let’s take a look at the process.

As the dark mantle of winter’s DWINDLING days falls, trees can sense the loss of light. Thanks to chemical light receptors—phytochrome, which detects red light, and cryptochrome, which is sensitive to blue—trees can register day-length changes of as little as half an hour. When they do, they undergo chemical and PHYSICAL changes that produce autumn hues.

31.5 m...............

EXPLANATION:

Drav AUR gas me antar -------

Drav-

1.Drav , me gas ki apeksha kam rikt sthan hote hai.

3.Drav KA aaytan nishchit hota hai.

Gas-

1.gas me rikt sthan adhik hota hai.

1.Gas ka aaytan anishchit hota hai.

Explanation:

PARTICULARLY if you WANT to be an ASTRONAUT, an engineer, or a scientist with NASA, you should choose a STEM (science, technology, ENGINEERING, and math) centered education path.

You should also determine as early as possible if your eventual dream job with NASA will require graduate STUDY.

The law of MOMENTUM conservation can be stated as FOLLOWS. For a collision occurring between object 1 and object 2 in an isolated system, the TOTAL momentum of the two objects before the collision is EQUAL to the total momentum of the two objects after the collision.

EXPLANATION:

main kya janoon DIN bhar QUESTION

ANSWER :

BIODIVERSITY is the existence of a WIDE variety of species of plants, ANIMALS and microorganisms in a natural habitat WITHIN a particular environment.

Two reasons each of conserving:

(a) Forest

(i) It helps in retaining the sub-soil water.

(ii) It CHECKS flood.

(b) Wildlife

(i) To maintain ecological equilibrium.

(ii) To protect the nature.

Positive Integer factors of 108 = 2, 4, 3, 12, 36, 108 divided by 2, 2, 3, 3, 3, gives no remainder. They are INTEGERS and PRIME numbers of 108, they are ALSO called COMPOSITE number. Prime number are numbers that can divide without remainder, This MEANS that 108 is divisible by 2, 2, 3, 3, 3, numbers

HELLO MATE HERE IS YOUR ANSWER

lotus plant

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Answer:List of the IMPORTANT Salt and their Uses

Name of Salts

Uses

Sodium Chloride or Common Salt (NaCl)

Used in cooking food as well as for cooking gas.

Used as a preservative in pickles and in curing meat and fish.

Used in the manufacture of soap.

Used to MELT the ice in winter in cold countries.

Used for making chemical likes WASHING Soda, baking soda etc.

Sodium Hydroxide (NaOH)

Used for making soap and detergent

Used for making artificial textile fibre (rayon)

Used in the manufacturing of paper

Used for purification of bauxite ore

Used in de-greasing metals, oil refining and making dyes and bleaches

Sodium Carbonate or Washing Soda (Na2CO3.10H2O)

Used as cleansing agent

Used for removing permanent hardness of water

Used in the manufacturing of glass, soap and paper

Baking Soda or Sodium Bi-carbonate (NaHCO3)

Used as neutralising agent (antacid)

Used for making baking powder

Used  in fire extinguisher

Bleaching Powder or Calcium Hypochlorite

Used as bleaching agent in cotton industry and paper industry for bleaching cotton and linen as well as wood pulp respectively

Used for disinfecting drinking water

Used for making chloroform (CHCl3)

Used for making the wool unshrinkable

Plaster of Paris or Hemihydrate Calcium sulphate, CaSO4 1/2 H2O

Used in hospital for setting fractured bone

Used for making TOYS, DECORATION material cheap ornament, chalk etc

Used for fire-proofing material

Used for making surface smooth.

The name of the salt comes from the name of acid. For Example- Hydrochloride acids are called Chlorides, Sulphuric Acid are called Sulphates, Nitric Acid are called Nitrates, Carbonic acid are called Carbonates, and Acetic acid are called acetates.

ANSWER:

This SUBSTANCE is PHENOLPHTHALEIN

Answer:

When you breathe in, or INHALE, your diaphragm contracts (tightens) and MOVES downward. This increases the space in your chest cavity, into which your lungs expand. The intercostal muscles between your RIBS also help enlarge the chest cavity. They contract to pull your rib cage both upward and OUTWARD when you inhale.

ANSWER:

AMYLOPLAST : help in storage of carbohydrates (starch)

Example: potato

Elaioplast : store oils and fats

Example :seeds of castor, soyabean,GROUNDNUTS

Aleuroplast :store proteins

Example:aleurone layer in MAIZE seed

<STRONG>Answer:

Nuclear energy is used to generate electrical power. Therefore it is only possible to REDUCE the emission of CO2 if nuclear power plants are used instead of other, CO2 emitting technologies. This is in PARTICULAR the case for electrical generation plants fuelled by coal, oil or gas. The CO2 emission can indeed be reduced, if electrical power plants driven by fossil fuels are being replaced by nuclear power plants. However the application of nuclear power unfortunately is highly problematic, therefore the problem of CO2 EMISSIONS must not be looked at independently of all other risks and problems.

Explanation:

Now, one question can occurin the context is -

How much can nuclear energy reduce the main cause of global warming?

The International Energy Agency (IEA) records the energy consumption world-wide and produces a forecast for the next 25 years. In their last energy outlook published in autumn 2006, IEA predicts a strong increase of the carbon dioxide emissions by the year 2030 as a consequence of the increasing demand for energy world-wide.

Additionally, IEA investigated to which extent the above mentioned emissions of CO2 could be prevented if politics applied rigorous measures. One of many measures investigated was massive facilitations and incentives for building additional nuclear power plants.

From all measures proposed, nuclear energy was found to have the smallest effect (only 10%). This result is even more remarkable facing the fact that IEA is known for having no reservations whatsoever against nuclear energy.

The following results attract attention:

-

Almost 80% of the desired effects are due to increasing the energy efficiency (36% due to increasing the efficiency of the use of fossil energy, 29% due to increasing the efficiency of electrical appliances and 13% due to increasing the efficiency at the electrical power generation).

12% of the desired effects are due to furthering the generation and application of renewable energies.

Only 10% of the desired effects are due to furthering nuclear energy.

This result is surprising, in particular if you think about how nuclear power is praised as solution to global warming by politicians like George W. Bush and Tony Blair. It seems like they would (again) head into the wrong direction.

Instead of talking about measures to increase the energy efficiency, which accounts for 80% of the effects, some politicians propagandize building nuclear power plants, which according to IEA can only account for 10% of the desired effects. Here the focus is clearly on the wrong subject.

Now,one another question occurs in the context is -

Why use nuclear power at all?

If the focus is put only to avoid the emission of CO2 and if all other side effects are neglected, then nuclear energy can indeed contribute to the solution. However the problem of climate change should be solved and discussed in a much wider context: It is important to limit our consumption of resources to such an amount which does not curtail future generations nor other beings on Earth. We finally must learn to live a sustainable living .

In this context, nuclear power plants are no solution at all. On the contrary, it would mean to shift from one problem (CO2 emission) to another and not less severe problem (nuclear waste, risk of nuclear catastrophes, limited resource uranium, nuclear proliferation

Hey MATE!!

here's your answer..

»Skin....

»This consist of pores and cause of sweating and these are also filled with NERVES and we also can sense TEMPERATURE from it and it is also one of sense organ.

★★Hope it will be HELPFUL for you ☺★★

Answer:

1. If any one throw WASTE in the WATER body the have to pay fine of 2000.
2. The FACTORY how had the waste supplies in the water they have to give its 20%of profit to the GOVERNMENT every mounth

ANSWER :

Ozone layer prevents the harmful ultraviolet radiation to enter the ATMOSPHERE and reach the earth’s surface. Depletion of ozone layer has become a cause for concern because it can cause serious effects on human body and other organisms of the environment like fatal diseases such as skin CANCER, CHANGES in genetic material DNA, eye damage, etc.

Answer:

According to it the ratio of the MASSES of the two elements A and B which combines separately with a fixed MASS of 3rd element C then they have same or simple MULTIPLE of the ratio of the masses of a and b which combine DIRECTLY with each other

ANSWER:

Hey..!!

The OBJECTS surrounding US are created out of matter, and it is present in three forms, i.e. element, compound and mixture. Chemistry is that BRANCH of science which deals with these three forms. Elements allude to those substances that can’t be split into SIMPLER substances. The compound is the chemical combination of elements, bonded together in specific proportion. The mixture is the physical combination of substances, bonded together in any proportion.

____________________________________

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ANSWER:

Nitrogen-fixing BACTERIA are MICROORGANISMS present in the soil or in PLANT roots that change nitrogen gases from the atmosphere into solid nitrogen compounds that plants can USE in the soil

Explanation:

ANSWER:

It is NECESSARY to REMOVE weeds because they compete with the crops for SUNLIGHT, water, NUTRIENTS and space.

Answer:

For onion's case ( "onion me konsa gas onion mein kaun sa gas hai dulhan leke aansu girata hai" )- nichwala parlo -

Onions produce the chemical irritant known as syn-propanethial-S-oxide. It stimulates the eyes' lachrymal GLANDS so they release tears. Scientists used to blame the enzyme allinase for the INSTABILITY of substances in a cut onion.The SYNTHASE enzyme converts the amino acids sulfoxides of the onion into sulfenic acid.

For Orenge's case -

("Orange mein kaun sa gas hai uski silky ha") ke lia nichwala jo para hai wo porlo -

Biogas is gaseous material produced during anaerobic digestion of organic compound. Biogas holds wide applications such as fuel for electricity, car, cooking, lightening, and heating. Among these applications, conversion of orange peels wastes into fuel is attractive, since it gives benefits in terms of both energy recovery and environmental aspects. Orange peel waste contains both soluble and INSOLUBLE carbohydrates that can be digested to biogas . However, the main challenge to produce biogas from orange peel is the PRESENCE of an antimicrobial compound “D-limonene.” This chemical constitutes 90% of oranges essential oil as 2-3% of dry matter of the orange . Limonene has been reported to be highly toxic to anaerobic digestion. It causes ultimate failure of the process at concentration of 400 μL/L on mesophilic digestion and in the range of 450 to 900 μL/L on thermophilic digestion

Answer:

The law of reciprocal PROPORTIONS was proposed by Jeremias Ritcher in 1792. It states that, "If two different elements combine separately with the same weight of a third element, the ratio of the masses in which they do so are either the same or a SIMPLE multiple of the mass ratio in which they combine."

Explanation:

For example -

Oxygen and SULFUR react with copper to GIVE copper oxide and copper sulfide, respectively. Sulfur and oxygen also react with each other to form SO2. Therefore,

in CUS:

Cu:S = 63.5:32

in CuO:

Cu:O = 63.5:16

S:O = 32:16

S:O = 2:1

Now in SO2:

S:O = 32:32

S:O = 1:1

Thus the ratio between the two ratios is the following:

2/1 : 1/1 = 2:1

This is a simple multiple ratio.

ANSWER :

▶️Biodegradable substances are those substances which are broken down into simpler, harmless substances in nature in due COURSE of time by the BIOLOGICAL processes such as MICRO organisms LIKE certain bacteria.

▶️Non-biodegradable substances are those substances which cannot be broken down into simpler, harmless substances in nature.

▶️Two biodegradable pollutants are agricultural waste and sewage.

ANSWER:

YES, its a probpem, but not for me!!!!!!

EXPLANATION:

No Explanation

ANSWER:

what is the MEANING of UR QUES????

ANSWER:

Answer:PLASTER of PARIS or GYPSUM...

FORMULA:CaSo4.3H2o

Answer:LUNGS

Explanation:lungs have ALVEOLI which help in diffusion of various gases from AIR to the blood and vice VERSA

Atomicity is the total NUMBER of atoms present in one molecule of an ELEMENT, compound or a substance.

For example, in O2, there are 2 atoms of oxygen.

Hope it helps you...

ANSWER:

they CAUSE VARIOUS DISEASES and also spoil the FOOD

ANSWER:Oxygen

Explanation:it is USED for BREATHING and RESPIRATION

Pesticides are detrimental for the ENVIRONMENT and PRODUCE CONSIDERABLE DAMAGE to ecosystems. Insecticides and herbicides may be harmful for non-target species. Pesticides pollute air, water and soil. Carried by the wind, pesticide suspensions contaminate other areas.

Answer:

EXPLANATION:

Of those ridiculous run-flat tyres, and they've not messed about with any fancy GEARBOXES EITHER. They've FITTED it with a PROPER old-fashioned manual.......

Answer:

Mitochondria

EXPLANATION:

Mitochondria is known as the POWERHOUSE of the cell.

Answer:because it is a bad conductor of HEAT and so that our hand doesn't GET burned

Explanation: