What animal can cause terrible things to the ecosystem?

the elephants , the locusts, crown-of thomas starfish,cattle,common carp

Explanation:

Elephants are the world's largest and most powerful land animals, so it's not surprising they have a profound impact on the ecosystem.

The locust swarm of lore is one life phase of a type of short-horned grasshopper. It's a phase that can become a plague under the right conditions.

This large starfish gets its name from the venomous, long spines that cover its body. They live among and feed on coral polyps. When the species becomes overpopulated, it can destroy vast coral reef ecosystems. In fact, widespread destruction of the Great Barrier Reef is partly blamed on these sea stars, which have experienced a population explosion over the last decade or so.

According to the U.N. Food and Agriculture Organization, cattle farming is responsible for 18 percent of greenhouse gases. Cattle emit a large volume of methane through burping and flatulence. Cattle ranching is also a major source of deforestation around the world, most notably in South America's Amazon rain forest.

The common carp is a true bottom feeder, uprooting and disturbing submerged vegetation. These fish are notorious for altering their environment.

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times