Why does this recent discovery about the Galapagos finches prove that it's often challenging for scientists to determine when two groups of individuals are separate species? What factors do scientists need to consider when determining
whether a species is a new species or part of an existing species?

maybe because its impossible for balloons to lift a whole entire house.

the answers are as following:

1. c. double helix, nucleosome, coil, supercoil, chromosome

2. b. g2 phase, preparation for mitosis

3. d. interphase consists of the g1, s, and g2 phases

4. c. metaphase

5. a. chromosomes are duplicated before cell division so that each new daughter cell has a complete set