After studying the timeline above what observations can you make about the us environmental policy between 1970 and 1996

Environmental policy solves issues with the help of economics, natural science and permanent research.

The U.S. Environmental policy is divided in three stages:

-The First Period(1780-late 1800's)

-The Second Period(late 1800's-mid 1900's)

-The Third Period((mid 1900's-present)

In the timeline of the recent period you can observe the following.

1.- The creation of "The Earth Day" in 1970. This was an effort to create consciousness in people about the overuse of natural resources.

2.- From 1970 to 1995, many environmental laws were enacted by the Congress. For instance, the National Enviromental Provision Act, Endangered Species Act, Safe Drinking Water Act, Toxin Substances Control Act, Food Security Act, and the Pollution Prevention Act.

Those laws help us protect the environment and natural resources, a very important thing to combat global warming.

as university of miami psychologists debra lieberman and adam smith pointed out in a recent article in the journal current directions in psychological science, humans have social and psychological mechanisms to deter incest. with very few exceptions, marriages between brothers and sisters and between parents and their children are verboten in every human culture. the primary psychological anti-incest mechanism is the yuck response. even the idea of sex with their mom or dad, bro or sis is upsetting to most people. the psychologist jonathan haidt has found that nearly everyone is repelled by the prospect of brother-sister sex, even in hypothetical situations in which there is no chance of pregnancy).

the biological cost of incest

this raises an interesting question: just what’s so bad about incest? sure, having sex with your dad or your sister seems gross — but why? some anthropologists have argued that incest taboos are learned social conventions. this explanation, however, doesn’t make sense to me as it does not explain the widespread existence of anti-incest mechanisms in creatures ranging from cockroaches to chimpanzees. second, the incest taboo is about as close to a universal law as human moral rules get.

why should mechanisms to avoid incest be so widespread both in nature and across human societies? the answer is simple. the problem with having sex close with relatives is that there is an astonishingly high chance that your offspring will be born with a serious birth defect.