What graph? Can you send me a pic of the graph because otherwise i cant answer the question.
Answer:
The answer is D a retrovirus inserts DNA into the host cells genes
Crossing over. Parts of sister chromatids will sometimes switch places with the parallel part, resulting in a completely unique DNA sequence.
Examples
High respiration rates from mass global population
Deforestation
A pollutant is a substance or energy introduced into the environment that has undesired effects, or adversely affects the usefulness of a resource.