The main energy source used by humans has changed over time from
a. fossil fuels to solar.
b. wood to wind.
c. wood to fossil fuels.
d. fossil fuels to nuclear.

2polhiswhere is the energy in a glucose molecule stored? ooa. inside the carbon atomsb. inside the protonsc. in the bonds between the atomsood. inside the hydrogen atoms

What is an endocrine function? (apex) a.esophageal glands release mucus into the esophagus b.salivary glands release saliva into mouth c.swear glands release sweat to the skin d.the pineal gland releases melatonin into the bloodstream

Organisms that successfully adapt will leave to grownone of the above