Because they are far from earth look like a small stone on the sky
Sediment pollution runoff, construction, livestock field, and flooding
Almost all species on earth feed on plants to get nutrients
You didn't provide us with any possible ways? Primary reinforcers are, however, types of reinforcers where they immediately elicit a reward or reward-like behavior once they are applied in a situation. An example would be apple juice.
Secondary reinforcers on the other hand need to be associated with something for them to become reinforcers or they provide rewards in a non-direct way. An example would be money.
This is the main relationship between them.
I think i see what he means the answer is B.
but correct me if i'm wrong.
