If you run tests on an organ and find that is is involved in relaying signals and impulses. what organ could it be? a. brain b. lungs c. muscles d. heart

The transport tubes from food came down the plant are called?

The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body

Which feature of a human community is similar to a niche in a biological community