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1.Lead ACID accumulater
2 NICKEL IRON CELL

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a LAND FILL SITE pollutes air along time because decomposition of some materials will take place this leads to pollute air.

One major reason in DECREASE of lustre in METALS is their rusting or corrosion when they are EXPOSED in moisture and air.


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Hey

Your ANSWER is alveoli

It is a SAC like thing in which air goes and Respiration TAKES place. It is located in the lungs and it is at the END of bronchioles.

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ANY 5 ADVANTAGES OF BIOTECHNOLOGY FOR AGRICULTURAL DEVELOPMENT ARE:

1. farmers get greater FINANCIAL return while using the environmental friendly FARMING practices through the use of AGRICULTURAL BIOTECHNOLOGY.

2. herbicide reduction biotech varieties have dramatically reduced farmers reliance on pesticides applications.

3. BIOTECHNOLOGY have helped many farmers to get a higher YIELD and higher economic development. it has reduced the evil of hunger.

4. J.S HT biotech crops contributed , in 2007 , on the equivalent of REMOVING 9.48 billion pounds of carbon dioxide.

5. the positive impact of biotech crops have had on reducing the use of insecticide, pesticides,......etc...it has also reduced pollution.

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NEWTON's first law of motion states that an object at rest remains at rest and an object in motion remains in motion with the same VELOCITY unless ACTED upon by what we call an UNBALANCED force. ... Velocity is the speed of an object in a specified direction

MAIN FACTORS of abiotic components are :

Atmosphere, chemical ELEMENTS, sunlight/temperature, WIND and water

Dentist have to see a large image. By the property of concave mirror if we stand between the POLE and focus of the mirror then image obtain in VIRTUAL and erect. and it is MAGNIFIED in size . hence dentist USE such mirror.

It's a SUNDEW PLANT, a PARASITIC plant which FEEDS on INSECTS

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》One MOLE of NH3 have more number of hydrogen atoms than the two MOLES of HCl.

》This based on the AVAGADRO number of moles that is 6.023×10^23.

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#Bebrainly
Together we go FAR..

The ''nitrogen cycle'' is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, TERRESTRIAL, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes. Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification. The majority of Earth's atmosphere (78%) is nitrogen,[1] making it the largest SOURCE of nitrogen. However, atmospheric nitrogen has limited availability for biological use, leading to a scarcity of usable nitrogen in many types of ecosystems.

The nitrogen cycle is of particular interest to ecologists because nitrogen availability can affect the rate of key ecosystem processes, including primary production and decomposition. Human activities such as fossil fuel combustion, use of artificial nitrogen fertilizers, and release of nitrogen in wastewater have dramatically altered the global nitrogen cycle.[2][3]

The conversion of nitrogen gas (N2) into nitrates and nitrites through atmospheric, industrial and biological processes is called nitrogen fixation. Atmospheric nitrogen must be processed, or "fixed", into a usable form to be taken up by plants. Between 5x1012 and 10x1012 g per year are fixed by lightningstrikes, but most fixation is done by free-living or symbiotic bacteria known as diazotrophs. These bacteria have the nitrogenase enzyme that combines gaseous nitrogen with hydrogen to produce ammonia, which is converted by the bacteria into other organic compounds. Most biological nitrogen fixation occurs by the activity of Mo-nitrogenase, found in a wide variety of bacteria and some Archaea. Mo-nitrogenase is a complex two-component enzyme that has multiple metal-containing prosthetic groups.[4] An example of free-living bacteria is Azotobacter. Symbiotic nitrogen-fixing bacteria such as Rhizobiumusually live in the root nodules of legumes (such as peas, alfalfa, and locust trees). Here they form a mutualistic relationship with the plant, producing ammonia in exchange for carbohydrates. Because of this relationship, legumes will often increase the nitrogen content of nitrogen-poor soils. A few non-legumes can also form such symbioses. Today, about 30% of the total fixed nitrogen is produced industrially using the Haber-Bosch process,[5] which uses high temperatures and pressures to convert nitrogen gas and a hydrogen source (natural gas or petroleum) into ammonia.[6]
Nitrification

Main article: Nitrification

The conversion of ammonium to nitrate is performed primarily by soil-living bacteria and other nitrifying bacteria. In the primary stage of nitrification, the oxidation of ammonium (NH+
4) is performed by bacteria such as the Nitrosomonas species, which converts ammonia to nitrites (NO−
2). Other bacterial species such as Nitrobacter, are responsible for the oxidation of the nitrites (NO−
2) into nitrates (NO−
3).[6] It is important for the ammonia (NH3) to be converted to nitrates or nitrites because ammonia gas is toxic to plants.

Due to their very high solubility and because soils are highly unable to retain anions, nitrates can enter groundwater. Elevated nitrate in groundwater is a concern for drinking water use because nitrate can interfere with blood-OXYGEN levels in infants and cause methemoglobinemia or blue-baby SYNDROME.[10][11]Where groundwater recharges stream flow, nitrate-enriched groundwater can contribute to eutrophication, a process that leads to high algal population and growth, especially blue-green algal populations. While not directly toxic to FISH life, like ammonia, nitrate can have indirect effects on fish if it contributes to this eutrophication. Nitrogen has contributed to severe eutrophication problems in some water bodies. Since 2006, the application of nitrogen fertilizer has been increasingly controlled in Britain and the United States. This is occurring along the same lines as control of phosphorus fertilizer, restriction of which is normally considered essential to the recovery of eutrophied waterbodies.

Denitrification

Template:Main Topic: Denitrification is the reduction of nitrates back into nitrogen gas (N2), completing the nitrogen cycle. This process is performed by bacterial species such as Pseudomonas and Clostridium in anaerobic conditions.[6] They use the nitrate as an electron acceptor in the place of oxygen during respiration. These facultatively (meaning optionally) anaerobic bacteria can also live in aerobic conditions. Denitrification happens in anaerobic conditions e.g. waterlogged soils. The denitrifying bacteria use nitrates in the soil to carry out respiration and consequently produce nitrogen gas, which is inert and unavailable to plants.

The changes which are desired(need) to be CHANGE are CALLED as DESIRABLE changes. Ex: Change of MILK to curd, REOPENING of fruits…etc

An ELECTRONIC circuit is COMPOSED of individual electronic components, such as resistors, transistors, capacitors, inductors and DIODES, connected by CONDUCTIVE wires or traces through which electric current can FLOW.

your ANSWER will be d.

1/f=1/v+1/U.....
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My school's name is St. John's School. It is not far from our house. I go to my school every day on foot. Our Principal's name is Father D'Souza. Our class-teacher is Miss Faithful. There is a small playground in our school-compound. During the tiffin hour, we play there. We play volley-ball and badminton. There are TWO swings on the side, We swing there merrily. We have a good LIBRARY on the ground floor of the school-building. Our librarian is Miss Stephens. She helps us in selecting good books. We take books on loan to read. The students of our school are gentle and disciplined. There is not much noise in our school. Our Principal is very STRICT. But he is ALSO kind to all. I am happy as a student of my school. I LOVE my school, my classmates, and my teachers. My school is my second home.

FOOD items RICH in calcium like MILK, fish,ETC

HEY

Your ANSWER is METHYL salicylate (C₆H₄)

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Here is UR ANSWER- VITAMIN B

Answer:

It is very important to KEEP a good CONTACT between a LOWER end of LIGHTNING conductor and the EARTH because it protects the building from thunder and if the contact will not be good so it will cause a harm to the building and property.

PLEASE MARK AS BRAINLIEST ANSWER

The process of BECOMING or of MAKING something BECOME SMALLER or shorter

Temperate coniferous forest is a terrestrialbiome found in temperate climate regions of the world with warm summers and cool winters and adequate rainfall to sustain a forest. In most temperate coniferous forests, EVERGREEN conifers predominate, while some are a mix of conifers and broadleaf evergreentrees and/or broadleaf deciduous trees. Temperate evergreen forests are common in the UNITED States of America, areas of regions that have mild winters and heavy rainfall, or inland in drier CLIMATES or mountain areas. Temperate coniferous forests are found mainly in the Northern Hemisphere in North America, Europe, and Asia, but some are found in the Southern Hemisphere.[1]. A separate ecoregion, the tropical coniferous forests, occurs in more tropical climates.

Structurally, these forests are rather simple, generally consisting of two layers: an overstory and understory. Some forests may support an INTERMEDIATE layer of shrubs. Pineforests support a herbaceous understory that is generally dominated by grasses and herbaceous perennials, and are often subject to ecologically important wildfires. Many species of tree inhabit these forests including cedar, cypress, Douglas fir, fir, juniper, pine, podocarpus, spruce, redwood and yew. The understory also CONTAINS a wide variety of herbaceous and shrub species.

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It BRINGS the IMPURE BLOOD to the NEPHRON for the FILTRATION.

MINIMUM ONE TELLS the minimum TEMPERATURE

MAXIMUM one tells the maximum temperature

By USING NATURAL FERTILIZER INSTEAD of CHEMICAL fertilizer

SULPHUR DIOXIDE...I GUESS

The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits BLOOD to CIRCULATE and transport nutrients(such as AMINO acids and electrolytes), OXYGEN, carbon dioxide, hormones, and blood CELLS to and from the cells in the body to provide nourishment and help in fighting diseases, stabilize temperature and pH, and maintain homeostasis.

Variations are beneficial to thespecies than individual because sometimes for a species, the environmental conditions change so drastically that their SURVIVAL BECOMES difficult. ... However, all variations arenot NECESSARILY beneficial for theindividual ORGANISMS.

Because regeneration occurs in cellular - tissue grade of ORGANISATION and MULTICELLULAR organisms have organ-system grade of organisation

The number of protons and neutrons ALONE will vary but the number of nucleons or the sum of protons and neutrons in isobars will always be same. Isobars always have DIFFERENT atomic STRUCTURE because of the DIFFERENCE in atomic numbers. ... Thus,isobar has different CHEMICALPROPERTIES.

Calcium is a chemical element with symbol Ca and atomic number 20. An alkaline EARTH METAL, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontiumand barium. It is the fifth most abundant element in Earth's crust and the third most abundant metal, after iron and aluminium. The most common calcium compound on Earth is calcium carbonate, found in limestone and the fossilised remnants of EARLY SEA life; gypsum, anhydrite, fluorite, and apatite are also sources of calcium. The name derives from Latin calx "LIME", which was obtained from heating limestone.

Yo!

Here's the answer!

Hydrogen gives maximum heat when 1 kg of it is burned.

And the amount of heat is called-"Calorific value."

It is EXPRESSED in a UNIT called KILO JOULE per kg (kJ/kg).

Hope that this is sufficient.

-TGA.

When the hard shell is completely formed AROUND the developing EMBRYO, the hen lays the egg. the embryo takes about THREE week to develop into a chick. the hen provides sufficient warmth to the egg by SITTING on the egg . During this period ( called incubation) the chick develops inside the egg. After the chick is completely developed it brust open the egg shell.

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Because the magnet broken or any piece have same NORTH and South poles.



One more answer,

the magnet LOOSEN its magnetism when it FALLS .
So, he fails because the magnetism of the magnet is not their much.

Electroplating to Prevent Corrosion. Electroplating is one of the most POPULAR methods employed to ACHIEVE corrosion CONTROL. ... This metal COATING acts as a SACRIFICIAL barrier that can slow and even prevent corrosion from forming on the underlying material, which is referred to as the substrate.

The force DUE to which the EARTH pulls any object TOWARDS itself is known as force of GRAVITY

ANSWER:

the STATE of MOTION of an object is DEFINED by its velocity

A) sahiwal
b) Murrah
c) MEHSANA

Indian Rocket LAUNCHES 31 SatellitesInto Orbit. ... The PSLV rocket lifted off from the Indian Space Research ORGANISATION's Satish DHAWAN SpaceCentre in SRIHARIKOTA on the country's east coast carrying the agency's Cartosat-2F Earth observation satellite and 30 smaller payloads.