Regulation of a system by the output.
Answer: b.Nutrients collected by the immune system are carried throughout the body by the integumentary system
Light through a window is not direct sunlight as some of the light is diffused and reflected as it passes through the window, reducing its intensity. Light through a window is the most direct form of light available indoors, but is usually at least 50% less intense than direct sunlight outdoors.
Because many animals eat plants to survive, so if you cut off the animals food source you will kill them because they have nothing to eat, which leads to a chain reaction. If bunnies eat grass and foxes eat bunnies the everything goes extinct, because the grass dies and the bunny doesnt have anything to eat so it dies, and then the fox was supposed to eat that bunny but now its dead so now the fox will die too
