From the process of respiration chemical energy in the form of ATP.
Answer: A)Soil can only be formed by natural processes over hundreds or thousands of years.
Explanation: Soil can take 500 years or more for an inch of topsoil.
Answer: The answer is C, a monohybrid cross.
Explanation:
A dihybrid cross would be crossing 2 (usually linked) traits in the same punnett square, while a trihybrid cross is with 3 traits. Since he's only studying 1 trait (tall vs. short) the answer is C, a monohybrid cross.