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Q. Is pollution always caused by humans?
In the most cases pollution is caused by human activity. Other species and some abiotic factors though can also pollute an ecosystem. For instance, the red tide is created by proliferation of some algae and volcanic dust is a consequence of the internal activity of the planet.
Even though association between GAS pharyngitis and the ARF is fairly well established, the exact pathogenic mechanisms are not clearly understood. However, two mechanisms are post
Describe about the Halstead's discriminating tests Halstead's discriminating tests are viewed as a measure of adaptive abilities, of skills that ensured man's survival on the p
Long-hair in cats is due to a recessive long allele, l. Black cats are due to a recessive agouti allele, a. A short-haired tabby cat is crossed to a long-haired tabby cat, and they
What is the difference among essential and natural amino acids? Essential amino acids are those that the organism is not able to synthesize and that require to be ingested by t
What is a centimorgan? The Centimorgan, or The recombination unit, by convention is a distance between two linked genes that corresponds to 1% of recombination frequency of the
What are the possible effects on the fetus if, during pregnancy, the mother (a) smokes, (b) catches rubella? a) Smoking during pregnancy can lead to an underwe
what is cell?
Why does thermal inversion increases air pollution? What harm can thermal inversion cause to humans? Thermal inversion confines at low altitude a layer of pollutants that would
Explain Vasopressindrug term? As a single bolus of 40 U, vasopressin has been recommended as an alternative to epinephrine in VF/pulseless VT refractory to defibrillation. Furt
Measuring ecosystem diversity is not easy, and ther e is no definite index for its measurement. It is generally assessed by the measure of species diversity in an ecosystem, often
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