The diagram below shows the human digestive system.
C
А
B.

Which of the following best describes homeostasis? a. keeping the internal environment in a stable state b. keeping the external environment in a stable state c. beneficial characteristics resulting from mutation d. reproduction that results in offspring identical to the parent.

Sexual reproduction in the parent cell will result in offspring with a) identical genetic information. b) half the genetic information. c) double the genetic information. d) four times the genetic information.

Modern sea star larvae resemble some primitive vertebrate larvae. this similarity may suggest that primitive vertebrates