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In the diagram, the cervix is labelled with the number

B cells and T cells are made in  ____ and once mature, both types migrate to the _____.

A cow would belong to which trophic level?

The difference between essential and nonessential amino acids is that

Sometimes a fertilized egg attaches to the side of the oviduct and begins development of a fetus there. Why can’t this situation result in a full-term pregnancy?

Some of the individual members of a species of organism were moved to a new location that had different environmental conditions than their original location.  According to the theory of natural selection, what could happen after many generations to the descendants of the organisms that had been relocated?

Do you agree with the following statement? If so, please enter your whole name in the text box. I have neither given nor received unauthorized aid on this exam. 

Which of the following tissues would cover the surfaces of all organs?

Name one (1) contraceptive method used by men and explain how it works. Abstinence may NOT be the method mentioned.

Exponential growth cannot continue for long because of ____, all those conditions such as limited food, etc.