pick the best word to fill in the blank: It's a fact that petting furry animals reduces blood pressure, as there's plenty of evidence to support it.

In the african savanna,more wildebeests are born than the environment can support. which is most likely to happen over a period of years as a result

According to the big bang theory, after the "bang," the universe remained dark until about  300,000 yearsone billion yearsthree minutesthree billion years  later, when neutral atoms began to form.

Environmental differences within ecosystems are generally caused by