Which is not a potential threat or danger to an ecosystem rich in biodiversity?

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.

Match each symbol with its description.

When ash and dust begin to settle on the ground, they eventually become compacted by