An ecosystem is made up of two components:
O
abiotic (living) and biotic (non-living)
O
Land and organisms
O
abiotic (non-living) and biotic (living)
O
Earth and atmosphere

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.

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

How does a catalyst influence a chemical reaction?