In somatic cell nuclear transfer, the enucleated egg cell is OA) transplanted with DNA from a somatic cell
B) fertilized by a sperm so it will begin to divide
C) made to believe it is fertilized so it can then divide
OD) both A and B
E) both A and C

ecotourism pay for conservation efforts.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.

i thinking chemical change