The answer is A. This is the only grassland competition.
Answer:
Wedging (for the first one)
Explanation:
I believe the mineral he found was mica.
A. 1000 grams. 1000 is divided by ten each time it goes up the trophic scale. since it goes up 2, 3 and 4, the answer is 1000. (1000/10/10/10=1)