Which statement describes an example of how scientific knowledge influences societal decisions? O Scientists examine what causes Earth's tectonic plates to shift.
O Scientists observe how global temperature changes affect polar ice caps.
O Scientists publish articles that lawmakers use to regulate hazardous waste disposal.
O Scientists study the harmful effects of chemicals in plastics

a. by using fur or clothes to trap heat energy near the body

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.

light dependent reactions:

light independent reactions:

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