Use example to explain how changes to both living and non living parts of an ecosystem can affect individuals and communities population

Explanation:

As a functional unit of nature that includes the community of organisms that grow, reproduce, feed and interact, an ecosystem also includes the nonliving elements of the environment. An ecosystem describes a single environmental and ecological unit or community, whereas a biome, by contrast, tends to be regional and often has several distinct ecosystems within it. An aquatic ocean biome consists of numerous ecosystems like tidal pools, coral reefs and kelp forests.

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.