What is the mechanism of cellular injury that occurs when deep sea divers get "the bends"?

How do you date a sample of rock that you suspect as being one of the earliest on earth

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

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?