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