Mutalism, commensalism, and parasitism
Answer:
D
explain: The Move from high concentration to low competition. Until the concentration is equal . Diffusion expand needs no energy
Answer:
B
Explanation:
for 2 water can erode rocks to make canyons and other rock formations 3 because some land mases were formed with water and 4 because in many countries there are monsoon seasons witch brings heavy rain and high humidity
Answer:
Grass, Trees, Bottom, Chain
Explanation: