D. Arapahoe Community College
This is still true because there are still manufacturing companies out there that are not really following protocols and procedures that are geared towards a green environment. The sulfate concentrations in lakes show little changes because contaminants are still present within the atmosphere, hydrosphere, and troposphere of the Earth. It would take a long time before such lakes will be rejuvenated into their original state.
It appears A. and B. took place on the same date, April 19, 1775, but those two were the earliest, and for D., the poem was published on 1781, but it is based on the actions of Paul Revere on April 18, 1775. So, if you mean the poem, A./B. is the answer, but if it the actions, it would be D.
<span>b. she could give Lisa candy (something Lisa likes) every time she studies.
By giving Lisa a reward (candy) for her good behavior, Marge is reinforcing the good behavior (studying).
Positive reinforcement refers to the addition of a reward following a desirable behavior. Another example of positive reinforcement could be praising (rewarding) your child for doing the dishes (desirable behavior).
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