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1 Organelle that produces energy through cellular respiration.
2 They provide an energy source for the cells and may also play a structural role.
3 They cannot produce their own food.
4 Atoms and molecules in organic matter combine with each other producing...
5 Organisms made up of one cell.
6 The diversity of life on Earth.
7 They obtain nutrients from dead organic matter.
8 The most abundant elements in organic matter are called...
9 They capture energy from their environment and use it to transform inorganic substances into organic matter.
10 The sum of all living things on the planet and the physical environment in which they live.
11 They are needed from growth and the maintenance of body structures.
12 It is a group of organisms that can reproduce with one another as well as have fertile descendant.
13 Changes in the environment or in the organism itself.
14 Specialized cells used in sexual reproduction.
15 All living things are made up of ...
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