Answer:
Thermosphere.
Explanation:
The thermosphere and the exosphere together form the upper atmosphere. ... Because there are relatively few molecules and atoms in the thermosphere, even absorbing small amounts of solar energy can significantly increase the air temperature, making the thermosphere the hottest layer in the atmosphere.
Answer:
the gastric chief cell
Explanation:
produces pepsin in stomach
Answer:
pH 5 is the most acidic
Explanation:
The pH scale is known to range from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic.
