The answer would be A . stem cell research exploits fetuses and a mothers eggs because it is the only one that says something negative about stem cell reaserch, hope this helps :))
B lynxes , moose, and pine trees
The fertility rate of 2.1 with which populations are expected to eventually stabilize is known as the long-term replacement rate. In other words, if a nation maintains a fertility rate of 2.1 over a long period of time the population of that nation will eventually stabilize and it will neither grow nor shrink. Immigration allows the people to grow faster than the fertility rate would suggest. Also because of past growth, the population is younger than it would otherwise be. This means that there are more potential mothers and fathers. Only after its residents age can the population of a country stabilize.
Answer:
Adenine nucleotides are added to the end of the RNA strand, forming a tail.
