2. Explain how a small "lens" of soil leftover from the glaciers can result in a large old growth forest.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

the answer is b.) hydrogen bonds between bases.

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.

c. establishing proper sleep hygiene