Answer:
The simplest definition of ecosystem is that it is a community or a group of living organisms interacting with each other and with non - living things.
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Answer:
Amount of sleep
Explanation:
Sleep is vital for performing any kind of task in our everyday lives. The other answers aren't as important.
Anaerobic, fast twitch muscle fibres (or white fibres as they are known) as they provide large amounts of power over a short period of time
<span>osteoporosis
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I can answer but i need the picture!