The heart must beat faster during exersise because by increasing the heart rate the body is able to increase cardiac output and deliver the necessary blood flow to the mucles
Answer: Ask your mom
Explanation: She was in school before you duh
Ex. Air freshener.
simple diffusion is the process of a substance (such as air freshener) moving from high concentration to low concentration with little to no energy.
One is were you bang someone else to reproduce and the other is where you bang yourself to reproduce
Answer:
The box has blocked the sunlight from the waterweed and it has stopped photosynthesising
Explanation:
