They keep the Earth's Ecosystem in balance. and they make great companions When they are domesticated...
they announce dangerous or new animals, make water healthier for animals and us, and help cure animals and breed endangered animals
What
I would help the Penguins/polar bears/ and the cheetahs!
Zoos keep animals to help them. They to keep some of the animals so when they are about to go extinct then there will be some left on earth.
NOTHING!! well, i think they eat ants but a lot of animals do that.
if you keep beaches the same you can see more animals
no actually it just takes animals away from their natual environment
They are extremely important. They help find ways to keep the ocean clean, they discover sea animals and they help the marine animals stay safe.
They dont
The main science is called ecology. There are subsections called biomes and food weeds. Knowledge of these help scientists understand how the Earth interacts with plants and animals.
Earth science and physics are both the study of something. Earth science is the study of earth and its neighbors in space. Physics is the study of physical objects.
The fish wont be able to help the earth