Answer:
swim
Explanation:
because frogs were born with no feets so it can swim even though frogs have feet
It adds bases in only one direction.
Answer:
D
Explanation:
Bone marrow contains stems cells which then turn into immature blood cells and they mature there. kinda like a school for young blood cells. they also make white blood cells and platelets.
I believe that the answer is D. If something has evolved, it can not interbreed with its old species. I think this is right!
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Answer:
O to kill bacteria that cause disease
Explanation:
penicillins are a group of antibiotics used to treat a number of bacterial infections.
hope this helps!
