How does the cardiovascular system affect the nervous system?

What field of science did harry hess study?

In meiosis ii during anaphase ii which structures separated homologous chromosomes or sister chromatids

Where is having brightly colored feathers that attract mates most clearly an adaptation for a bird? a. a forest with dense vegetation b. a sandy beach beside an ocean c. a snowy tundra with little vegetation d. a swamp with many hawks that eat birds