When a bus company trains bus drivers on a simulator, they are employing training. a. substituteb. vestibulec. on-the-jobd. performance

they are employing B. vestibule training

i'd say that the moon rock is about 2.2 billion years old.

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.