Why do you think the demand for solar energy is increasing at this time ?

Other energy sources which are non-renewable are becoming more and more scarce, such as coal. Due to the lack of such resources, people are looking towards renewable sources of energy such as solar energy.

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.

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.