Which of the following is a successful piece of environmental legislation enacted by the Congress of the United States?

A) Clean Air Act (1970)
B) Clean Water Act (1972)
C) Endangered Species Act (1973)
D) all of the above


Ans: D) all of the above

Biology & Microbiology

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Answer the following statements true (T) or false (F)

1. Plants are unable to use nitrogen gas directly. 2. Sunlight can actually be so intense that photosynthesis can be stopped. 3. Nitrogen is one of the most abundantly applied fertilizers worldwide. 4. When body temperature drops below normal, a person starts shivering uncontrollably. This is an example of negative feedback.

Biology & Microbiology

An X-linked carrier is a ____

a. homozygous dominant female b. heterozygous female c. homozygous recessive female d. homozygous male e. heterozygous male

Biology & Microbiology

The flow of ____ and the cycling of ____ maintains nature’s organization

a. water; populations b. atoms; energy c. nutrients; water d. energy; materials e. raw materials; water

Biology & Microbiology

________ are the proteins that appear as dark bands that mark the ends of the sarcomeres

Fill in the blank(s) with correct word

Biology & Microbiology