Blood vessels expand during hot weather and retract/ tighten in cold weather
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Water<span> boils when the molecules are able to overcome the vapor </span>pressure<span> of the surrounding air to move from the liquid phase to the gas phase.</span>
Answer:
The presence of photosynthetic pigments.
A supply of carbon dioxide.
A supply of water.
Light energy.
A suitable temperature.
Explanation:
B) two poisonous frogs with similar color patterns
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