<span>The correct answer is B. Insertion. In this particular insertion there is an insert of three bases. Complementary strands in DNA are the opposite strand, so Adenine is coupled to Thymine and Guanine is coupled to Cytosine. So the complementary sequence (also called the antisense strand) of the original would be GTC GGC ATC, there's an extra 3 bases in there: ACA.</span>
Damage is caused to an ecosystem by adding fertilizer because some of the substances to the fertilizer is toxic or create bad reactions.
Answer: the correct answers are A, C, and D.
Explanation:
if the water is in a lake then no ocean water can reach that lake.
Answer: When studying a rock sample, geologists observe the rock's mineral composition, color, and texture.
Explanation:
