Answer:
A) determined by the environment
Explanation:
The Proterozoic division of the geological time scale is an era of the Phanerozoic eon. The Proterozoic division began 2.5 billion years ago and ended 542.0 million years ago.
Answer:
The roots help plants in anchoring them to the soil. They also serve as transport systems, allowing the plant to suck up water and dissolved minerals from the soil that it needs to grow. Some plants can store food in roots in the form of carbohydrates (sugars and starches).
B. Weakened
Overtiredness has a negative effect on driving capabilities.
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