Which of the following is NOT an environmental factor that causes mutations? Group of answer choices
Bacterial Cells
Virus Infections
Carcinogenic Chemicals
Radiation Exposure

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen

In the practice of science, this type of reasoning is used to develop explanations.

The sea slug that considered to be a photosyntheesizing animal