On a field trip with your class to mountain lakes in Vermont, you come across a beautiful clear lake that is deep, and you can see the pebbles at its bottom

Why does your classmate hypothesize that this lake has been subjected to acidic deposition?


The lake is clear because all plants, algae, and aquatic organisms are dead.

Biology & Microbiology

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The positively charged ion, potassium, and the

negatively charged ion, fluoride, will form what kind of bond?

a. ionic b. polar covalent c. nonpolar covalent d. hydrogen e. isotonic

Biology & Microbiology

The pulmonary veins deliver blood to the ____

a. right atrium b. right ventricle c. left atrium d. left ventricle e. lungs

Biology & Microbiology

Which is a part of the body's nonspecific defense mechanism?

A) skin B) T cells C) B cells D) antibodies

Biology & Microbiology

Restriction enzymes have the ability to cut DNA at specific nucleotide sequences

Indicate whether the statement is true or false

Biology & Microbiology