Answer:
They bring dissolved nutrients to the surface of the ocean. They decrease the levels of oxygen at the surface of the ocean. They decrease the amount of nutrients at the surface of the ocean.
Explanation:
There is no element with one valence electron and six energy levels. Only two valence electrons and six energy levels.
Answer:
Calcium
Explanation:
A: Calcium is a group 2 element with two valence electrons. Therefore, it is very reactive and gives up electrons in chemical reactions. It is likely to react with an element with six valence electrons that “wants” to gain two electrons. This would be an element in group 6, such as oxygen.
Answer:
<u><em>How can you tell from a food web which organisms will have the greatest biomass?</em></u>
The tropic level contains the greatest biomass in most ecosystems is producers. This occurs because producers get their energy from the sun, the sun is the most available resource, so there are the most at that level.
Explanation:
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Answer:
A. A Densley populated country.
Explanation:
Answer: Im pretty sure the answer is C.) DNA -> gene -> chromosome -> nucleus
Explanation:
