<span>All plant and animal groups existing together and the physical factors with which they interact compose an ecosystem.
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The heart, its function is to plump blood to the rest of the body
Answer: Biomass
Biomass produces gas or many sorts of waste products which are mostly used in burning and cooking. It is plant or animal material used as fuel to produce electricity or heat. Examples are wood, energy crops, and waste from forests, yards, or farms.
But the reason why it can be harmful is because biomass can produce gases like methane. Methane is a greenhouse gas which can harm the environment and reduce the ozone layer that stops harmful UV light from reaching the earth atmosphere.
Answer: The Asteroid Belt it's a region and it's with space between orbits of planet Mars and Jupiter. And that's where most of our asteroids in the Solar System are found. ( orbiting around the Sun)
Explanation: the Asteroid Belt probably or might or it does contain millions of Asteroids.