Which of the following concepts best explains why an island can support many beetles but few hawks? A. the energy pyramid
B. the carbon cycle
C. the nitrogen cycle
D. the food web

Some steps in cell division are shown below: 1. chromosomes condense and pair up 2. segments of dna of sister chromatids twist and cross 3. exchange of dna occurs between chromosomes 4. four daughter cells are created that are haploid which of the following steps is least likely to occur during meiosis 1?