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nevsk [136]
3 years ago
6

Help pls'll give brainlest

Biology
1 answer:
Harman [31]3 years ago
6 0
Here’s a jumping off point: atoms are the building blocks of molecules, molecules are the building blocks of cells. cells create tissues which create organs which create organ systems. organ systems of varying complexities are necessary for the function of organisms.
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In ecology, catastrophes permanently alter the physical structure of the existing environment.  

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