Good coronary circulation select one: a. strengthens heart valves by moving more blood through the heart. b. nourishes the heart and reduces the risk of a heart attack. c. to prevent blood pooling in the lower extremities. d. increases blood pressure in the heart.

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic

Answers to mastering biology drag the labels to their appropriate locations to complete the punnett squares for morgan's reciprocal cross. drag blue labels onto the blue targets to indicate the genotypes of the parents and offspring. drag pink labels onto the pink targets to indicate the genetic makeup of the gametes (sperm and egg). labels can be used once, more than once, or not at all. hints

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?