Explain the meaning of tephra and how volcanic bombs, lapilli, and ash relate to tephra

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

Which of the following is not a potential result of deforestation?

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