Answer – C. (photosynthesis in plants)
Out of the four options given, the only process which produces oxygen is photosynthesis in plants. The other three processes given in the options: Combustion, Respiration in animals, and operation of an acetylene torch normally consume oxygen.
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Answer:
Because in 1900s more revolutions took place and more pollution was done.
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It is false that to study Earth’s interior, geologists often rely on indirect methods, such as evidence from fossils. They rely on seismic waves and such.
Explanation:
No, they use seismic waves.A seismic wave is an elastic wave caused by an pressure such as an earthquake or an explosion. Seismic waves may travel either along or near the earth's surface (Rayleigh and Love waves) or by the earth's interior (P and S waves).
Explanation:
<em>Immunological memory</em> is the property of the immune system to store information about a stimulus so it can mount an effective response if it encounters the same stimulus again being this second response quicker and stronger even after years since the first encounter.
This kind of response is dependent on many subpopulations within T and B lymphocytes and NK cells. When encountering an antigen, B cells recognize it by membrane antibody specifically binding to the antigen and then being activated to expand rapidly with their progeny clones differentiating into plasma and memory B cells, these last ones have a long life span to remain in the body, ready when another encounter with the same stimulus occurs, this is how the basis for effective immunizations happens.
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Answer:
True - plants are living things
