B positive patients can receive blood from B positive, B negative, O positive and O negative donors.
Okay. The destruction of tundra vegetation will not really freeze the soil or deepen the active zone much. Therefore, A and C are eliminated. The destruction of the vegetation can actually melt permafrost, which contributes to global warming. The answer is D.
Answer:
C) none of the species would survive
Explanation:
clam only goes down to a pH of 4.5
Kelp --> sea urchins ---> sea otters best represents the feeding relationships in a kelp ecosystem that has not been disturbed
by humans.
