20 points acid rain is an example of

mechanical weathering
chemical weathering
deposition
deforestation

Why is excretion necessary to maintain homeostasis?

What are the fixed alleles in the human species? o a. the alleles that are on the most chromosomes b. the alleles that change most often 000 c. the alleles that no one has d. the alleles that everyone has

Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin