Which of the following is NOT true of acid mine drainage? It occurs from abandoned coal mines.

Harmful components are picked up by rainwater.

It separates the metals from the impurities.

Water involved contains metals and toxins.

The first element on the periodic table of elements is carbon. a. true b. false

Chromosome 17 is made of over million base pairs.

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided