What is an advantage of a change in pulse rate after exercising?
(1) the heart needs to produce more energy to supply the active muscle cells and maintain homeostasis.
(2) an increased blood flow carries excess waste products away from the active muscle cells.
(3) the blood is removing oxygen from muscle cells that were not active and carrying it to muscle cells that
are active.
(4) the blood is supplying the active muscle cells with carbon dioxide to neutralize wastes in those cells.

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.

the dna of humans and mice is almost 92% similar. this similarity indicates that . mice have a tail, while humans have a tailbone. the tailbone is a structure in humans.yes it's true.