Choose the statement that best describes the spread of communism in the years immediately following world war ii.
a) the number of communist countries increased during these years.
b) the number of communist countries decreased during these years.
c) the number of communist countries stayed the same during these years.
d) the number of communist countries increased in asia but decreased in europe.

Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm