C. What kind of charge do protons have?
What is the mass of a proton?

Proton, stable subatomic particle that has a positive charge equal in magnitude to a unit of electron charge and a rest mass of 1.67262 × 10−27 kg, which is 1,836 times the mass of an electron.

A proton has positive charge of 1

1.6726219 × 10^-27 kilograms

Explanation:

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water pollution kills aquatic life. aquatic life includes algae and other plant life that use photosynthesis. photosynthesis takes   c02 out of the air.  

c02is a greenhouse gas.

the answer is option a.