Which statement best describes why multicellular organisms have specialized systems? A. One system can do everything in the body.
B. All systems work separately from each other.
C. Systems fight against each other in the body.
D. Each system performs different functions that are necessary for life.

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.

How can active reading strategies you? o a. they can you get into better physical shape. o b. they can you read fewer science articles. o c. they can you understand what you read. o d. they can you avoid reading altogether.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?