Which of the following is not a way humans have directly impacted coral reefs?

Are salt and soap nutrients or toxins for yeast? explain.

Which is a genetic engineering advancement directly related to a career in biotechnology? 1) improving solar energy collection 2) transporting textiles at higher rates 3)creating crop foods that resist insect pests 4)repairing historical sites with quality materials

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a