Look at the photograph. Which example of the tragedy of the commons does
the photograph show?

A. Overgrazing

B. Overfishing

C. Polluting the air

D. Polluting the ocean

C. Polluting the Air

Explanation:

The answer is not A. because that answer choice refers to excessive grazing, which destroys grasslands and doesn't add smoke like shown in the photo. It's not B. because we don't see the fish being overfished, and again, there wouldn't be smoke being added in that case. It's not D. because there is no ocean in the picture in the first place; it's very clearly the air that's being polluted. C. is the most direct answer.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.

i think its both a and b