PLEASE NEED CORRECT ANSWERS ASAP 40 POINTS Gastric juices are secreted by glands which are located in the _____.

small intestine
mouth
stomach
pancreas

Match these items.

1. absorbs most ultraviolet rays

stratosphere
2. lowest layer of the atmosphere

greenhouse effect
3. starts seven miles above the earth

thermosphere
4. layer composed of layers

troposphere
5. important for its radiowave reflection

ozonosphere
6. trapping of heat by earth's atmosphere

ionosphere