Answer:
4. The cell has chloroplasts to turn sunlight into food
<span>Explanation: Oxygen is the more electro-negative of the atoms in the water molecule, so it tends to pull the 'shared' electron more to itself. Thus, the oxygen atom has a greater time-share of all electrons, and therefore the hydrogen atoms are more positive for a partial lack of electrons</span>
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NASA did not invent the smoke detector.
Trophic cascades are interactions with much power that control an entire ecosystem when suppressed
Four fundamental forces
<span>gravitation
electromagnetism
the weak interaction
the strong interaction.</span>
