Marcus wants to teach his dog to sit, and he wants his dog to learn the behavior in the fastest manner possible. Based on what you know about schedules of reinforcement, you tell him it would be BEST to use a(n) schedule of reinforcement. negative
continuous
intermittent
partial

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

not too sure but maybe in the hot springs.

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a

the correct answer is d