Which describes a common characteristic of animal-like and plant-like protists? Both can be autotrophs.
Both can be unicellular.
Both reproduce only asexually.
Both have glass-like cell walls.

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins

20 the main source of energy for our planet comes from the

Based on the data in the graphs do you think pepsin and trypsin are found in the same part of the body? explain your answer.