B, C, D, B
I hope these are right, hope this helped.
Im pretty sure that it is (A) because blood pumps to get every where through your body. If it didn't one half of your body would feel cold or numb.
When a mutation has an effect that helps a species adapt to an environment, and specimens of both genders have it, it will end up taking over, causing evolution to gradually happen.
Answer:
Respiratory epithelial cells line the respiratory tract from trachea to bronchi into bronchioles and alveolar sacs. ... The goblet cells produce and secrete mucous to trap pathogens and debris within the airway tract. Basal cells are progenitor cells that differentiate into cells types found within the epithelium.
Making a baby<span> starts with two key things: Eggs and sperm. In a woman's ovaries, there are hundreds of thousands of tiny eggs, waiting to make the trip down the fallopian tubes and into the uterus. These eggs are an integral part of a woman's body – in fact, when a </span>baby<span> girl is born, her body contains millions of eggs.</span>
