Which of the following are secondary air pollutants? CHOOSE ALL that apply!!! sulfuric acid rain
industrial smog
O sulfur dioxide
O carbon dioxide
Oground level ozone

wait any answer choices plz

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.

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers