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The steps in the scientific investigative process are always followed in the same sequence by every scientist, without fail.

Strip cutting of timber is a method of harvesting that

Between 2008 and 2050, the non-Hispanic white population in the United States is expected to drop from 66% to 46%.

A chemical element cannot be broken down into simpler substances by chemical means.

A relationship in which both species benefit is best labeled

The decline in approximately 70% of the world’s bird species is particularly alarming to scientists because

In the northwest Atlantic Ocean, a domino effect after cod and sharks fisheries were fished out caused the loss of

The United States Endangered Species Act offers protection only for species located within United States boundaries.

In order for the social changes to occur that will produce sustainable economies, fully 50% of the population of a country must support the change.

Carbon-12, carbon-13, and carbon-14 all have different numbers of protons. Thus, they can be described as isotopes.