(i know the answer) what caused natural selection among the peppered moths of manchester, england? a) natural environmental changes b) human-caused environmental changes c) genetic stability in the population d)  resource stability in the population    b) human-caused environmental changeshope this : )

(B) Human-caused environmental changes

Explanation:

Natural selection may be defined as the process that helps the organisms to survive better in their environment.

Industrial revolution leads to the natural selection of peppered moth. Hence, the human caused environmental changes is responsible for  natural selection in case of peppered moth of Manchester.

Thus, the correct answer is option (B).

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

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.