Name three things that people need that come from ecosystems.

Ecosystem is defined as an interaction between specific biotic communities (plants, animals, fungi, micro-organisms), along with its abiotic components (water, soil temperature, air, humidity) in a geographic region. Ecosystems on Earth utilizes solar energy and nutrients from the environment. Through various interactions such as food chain and food web, an ecosystem provides food, oxygen and water for all of its living creatures.

the speed increase from w to x due to increased gravity force

the speed decreases from x to y due to decrease in gravity

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