Answer:
Less oxygen. Less life.
Explanation:
Plants make up most of our oxygen here on earth, because of the carbon cycle and photosynthesis. They take carbon dioxide, and turn it into oxygen. And not only that, but some animals live in trees to protect themselves from birds and other animals.
Answer:
4
Explanation:
How do (sensory) receptors send messages to the brain?
Via (sensory) neurons
They use to determine weather
The immune system<span> is made up of a chain of cells, tissues, and organs that work together to protect the body. </span>
