(a) radon (b) mercury (c) lead (d) copper (e) iron 1. was once widely used in the united states as a gasoline additive 2. a gaseous decay product of uranium that is found in rocks 3. a leading cause of lung cancer in the united states 4. poses a health risk to humans who eat large quantities of marine fish such a

Answers

1. Lead was once widely used in the United States as a gasoline additive but it was banned due to health risk.

2. Radon is a radioactive gaseous decay product of uranium that is found in rocks, soil and water.

3. Radon is a leading cause of lung cancer in the United States because the by-product of this can get trapped in the lungs.

4. Mercury poses a health risk to humans who eat large quantities of marine fish such a tuna and swordfish.

the answer is admiramos

the rule for verbs is whoever you are referring to (in this case 'nosotros'), you need to change the ending of the word.

nosotros - amos

yo - o

tu - as

el, ella, usted - a

ellos, ellas, ustedes - an

(examples: nosotros bailamos (instead of bailar) or yo hablo (instead of habla)

d) center of the mid-ocean ridge

give brainleysest

sinserly,

steckh986