Deciduous tree leaves fall in autumn due to a breakdown in cells connecting the leaves to stems. The decreased sunlight in autumn produces a chemical that destroys the connecting cells.
Nervous and Endocrine System Glossary
How Does Your Brain Know That Your Finger is Cut? Your brain is part of one of your body’s nervous system. This system is one of the communication systems of your body. Nerves from your cut finger send messages to your brain. The endocrine system is your body’s other communication system. Following is a glossary […]