Which statement about mangroves and seagrass beds is NOT correct Group of answer choices

they have ecological value

they add to water pollution by giving off sulfates

they are threatened by human activities

they provide fish nurseries

d. organisms have cells with different shapes and functions.

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