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✮requried answer:Natural resources are resources that exist WITHOUT any actions of humankind. This includes all VALUED CHARACTERISTICS such as COMMERCIAL and industrial use, aesthetic value, scientific interest and cultural value. On EARTH, it includes sunlight, atmosphere, water, land along with all vegetation, and animal life.

The PRIMARY regulatory SITES INCLUDE the cardiovascular centers in the brain that control both cardiac and VASCULAR functions. Neurological regulation of blood pressure and flow depends on thecardiovascular centers located in the medulla oblongata.

odal tissue are specialised cardiac musculature present in heart.A PATCH of nodal tissue responsible for initiating the rhythmic contractile activity of heart is present in right upper corner of the right atrium called sino atrial node (SAN). The nodal musculature has the ability to generate action POTENTIALS without any external stimuli. The SAN can generate the maximum number of action potentials that is 70 - 75 per minute. It is responsible for initiating and maintaining the rythmic contractile activity of the heart it is KNOWN as pacemaker. The SAN plays a major role in cardiac cycle by GENERATING an action potential which stimulates both atria to undergo a simultaneous contraction.

1. Bacteria. These one-cell ORGANISMS are responsible for ILLNESSES such as strep throat, urinary tract infections and tuberculosis.2. Viruses. EVEN SMALLER than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS.3. Fungi.4. PARASITES.

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riner could IDENTIFY only three TRAIDS. 2- he failed to arrange all the then known elements in the form of traids having similiar CHEMICAL PROPERTIES.

ooking OIL PACKET contains 455 mlThen,Amount contained in 6 such packets = 455×6 = 2,730 Therefore, Amount contained in 6 such packets = 2 liters 730 ml

Algae are photosynthetic organismsAlgae can be EITHER UNICELLULAR or multicellular organismsAlgae lack a well-defined body, so, structures like roots, stems or leaves are absentAlgaes are found where there is adequate moisture.Reproduction in algae occurs in both ASEXUAL and sexual forms. Asexual reproduction occurs by spore formation.Algae are free-living, although some can form a SYMBIOTIC relationship with other organisms.

tion:By blood products (unclean needles or unscreened blood).By MOTHER to baby by PREGNANCY, LABOUR or nursing.By having UNPROTECTED vaginal, anal or oral SEX.

A heterogeneous MIXTURE is a mixture in which the composition is not UNIFORM THROUGHOUT themixture. ... A heterogeneous mixture consists of two or more phases. When oil and water are combined, they do not mix evenly, but instead form two SEPARATE layers. Each of the layers is CALLED a phase.

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study of Müllerlive frogs, he confirmed the law NAMED after Charles Bell and François Magendie, ACCORDING to which the anterior roots of the nerves originating from the spinal cord are MOTOR and the posterior roots are SENSORY.

⤵️⤵️ In chemistry, a MIXTURE is a material made up of TWO or more different SUBSTANCES which are not chemically COMBINED. A mixture is the PHYSICAL combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.

To have affected progeny (affectd son and DAUGHTER) from affected male and normal FEMALE, the female should be HETEROZYGOUS carrier of the trait. Since the trait is recessive, daughter can receive normal X chromosome for carrier mother and affected one from father. The resultant haterozygous daughter will be normal, though carrier. The trait under study may be colorblindness which is a X linked recessive disorder. The male parent is hemizygous recessive as human males carry one X chromosome (hemizygous) and the trait is recessive. Correct STATEMENT is A.

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d Answer:-Hydróphily in vallisnéria:-In vallisnéria, the male flowers scatter and start floating on the surface of water. While the fémale flowers develop under the water and start growing until they reach the surface of water with the help of their stalk. As soon as their stalk grow further, they become horizontal and a hollow dépression develops around that fémale flower. Through jérks the malé flower floating on the surface of water enter into the hollów depréssion, anther then érupts into the stigma and thus, póllination occurs on water.________________________________Extra:-Hydróphily:-Hydróphily is a form of póllination which occurs on the surface of water. This póllination mainly occurs through the FLOW of water. Eg:- Zóstera, vallisnéria, etc.Lets DISCUSS the process of pollination in Zostera:-In Zostera, the POLLENS float on the surface of water. While female flower produce long structures which extend upto the surface of the water and FORMS a coil like structure surrounds these pollens and pulls them UNDERWATER and hence, the pollination occurs.________________________________

The Equatorial low-pressure BELT SPREADS between 5° North and 5°South parallel.please MARK me brainliest

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eriodontitisPeriodontitis, also COMMONLY called pyrea, is the SEVERE FORM of periodontal DISEASE or gum disease? If you are over thirty-five you are likely to SUFFER from periodontitis the more advanced form of gum disease (gingivitis is the milder form). The following symptoms can indicate that you have gum disease. ...

tion:The males contain two heteromorphic SEX chromosomes, i.e., XY. ... As the two TYPES of sperms are produced in EQUAL proportions, there are equal CHANCES of GETTING a male or female child in a particular mating. As Y-chromosomes determines the male sex of the individual, it is also called andros

ence is the TRANSITIONAL period from CHILDHOOD to adulthood. The period of adolescence starts at puberty and continues till the age of 18-19. Different kinds of changes take place during this period, in both girls and boys. Some of them are given below:Adolescence in boys:-The male REPRODUCTIVE organs develops completely. The release of sperms takes place.In male, the larynx increases in size and appears as a protrusion in the throat.This is commonly known as Adam's apple. Individuals develops a deep voice.Boys also develop face hairs and chest hairs.The shoulders broadens and the chest becomes wider.Adolescence in girls:-The female reproductive system develops completely and the production of ovum takes place. Females develop a high pitched voice.In females, the waist broadens.In girls, the female gamete begins to mature and are released by the ovary. this process is called ovulation.When the fertilization does not takes place, the ovum is shed of the body along with blood vessels and THICKENED LINING of uterus. This process is called menstruation.________________________________

Statistics play a vital ROLE in researches. For example statistics can used as in DATA collection, ANALYSIS, interpretation, explanation and presentation. Use of statistics will guide researchers in research for proper CHARACTERIZATION, summarization, presentation and interpretation of the result of research.

Fungi is not prokaryotic organisms, they are eukaryotes.Features of Prokaryotic cells :- Prokaryotes lack nucleus and other membrane-bound organelles. Blue green algae, mycoplasma, bacteria pleuro PNEUMONIA like organisms represent prokaryotes. The outermost covering of prokaryotes are cell wall (expect mycoplasma). Well defined nucleus are absent. The clear nuclear area shows a TANGLED DNA called as Nucleoid. Membrane bound cell organelles are absent but membrane less 70S type of RIBOSOMES are present.

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भगतसिंग (पंजाबी उच्चारण: (ऐका) जन्म : इ.स. १९०७; मृत्यू : २३ मार्च १९३१) एक भारतीय क्रांतिकारक होते. हिंदुस्थानातील ब्रिटिश साम्राज्याविरुद्धच्या लढ्यात त्यांनी केलेल्या दोन हिंसात्मक कार्यांमुळे वयाच्या २३व्या वर्षी त्यांना फाशीची शिक्षा देण्यात आली.

The hormones your THYROID GLAND releases HELP regulate your metabolism, or how efficiently your body burns food for ENERGY. When your thyroid makes less of its hormones — as it does in hypothyroidism — your metabolism SLOWS down. So you won't burn off calories as quickly and you'll gain weight.Mark me Brainliest!!

tion:SURFACE chemistry is a branch of chemistry that deals with the study of the NATURE of surfaces, and physical and chemical reactions occur at the interface of two phases. It is closely RELATED to colloid science. The FOUNDATION of colloidal chemistry was laid down by Thomas Graham, a Scottish scientist.

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P. vivax lifecycle (reproduced with permission from Lancet Infectious Diseases) - click to enlargeThe P. vivax lifecycle is complex, INCLUDING more than ten stages of cellular differentiation, with the parasite invading at least four types of cells within two different HOSTS. *Mosquito to human transmissionDuring a blood meal, a malaria-infected female Anopheles mosquito INOCULATES sporozoites into the human host. *HypnozoitesUndetectable with current diagnostic methods, hypnozoites in the human liver may reactivate weeks or MONTHS after the initial infection, leading to multiple CLINICAL relapses and onward transmission.*Asexual blood stage infectionFollowing their release into the blood, merozoites invade reticulocytes (immature red blood cells), and mature into schizonts which rupture to accelerate the infection. This asexual erythrocytic stage (or blood stage) causes the symptoms of malaria which appear about 48 h after infection

Specific features of Phylum ANNELIDA- The exterior and interior of the BODY is segmented. Moist secretions make the skin of the earthworm slippery and moist. It has chitinous setae on its body. Adaptations- The earthworm's skin is BROWN COLOURED like the colour of MUD.

Biofertilizers are the substance that CONTAINS MICROBES, which helps in promoting the growth of PLANTS, trees by increasing the supply of essential nutrients to the plants. It COMPRISES living organisms which include mycorrhizal fungi, blue-green algae, and bacteria.Hope it will HELP you Mark me the branliest

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The intertrochanteric line (or spiral line of the FEMUR[1] ) is a line located on the anterior side of the PROXIMAL end of the femur.Intertrochanteric lineGray339.pngRight hip-joint from the front. (Intertrochanteric line labeled at bottom left.)Gray244.pngRight femur. Anterior surface. (Intertrochanteric line VISIBLE near TOP, as diagonal line below neck.)DetailsIdentifiersLatinlinea intertrochantericaTA98A02.5.04.009TA21368FMA74587Explanation:

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