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One of those four i know.. fer sure. im pretty sure its 3.

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Q: An atom of fluorine has 9 electrons.Its second energy level has?
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What percentage of the carbon atom's second energy level is filled?

4%..............ur welcome


How does a sparrow get energy from the first level consumer?

What the second lever consumer eats the first lever consumer, it gets only a little bit of its energy. Say that the first lever consumer has 100 percent of energy, the second lever consumer will come along and eat it then only get 10% of the first level consumer. I don't know if that made any since, but I hope it did(:


Explain what is meant by the statement The amount of food energy passed along grows smaller and smaller as the chain becomes longer?

That statement is talking about a food chain and the amount of available energy: The most energy is available at the producer level. A producer is a plant that gets energy from the sun. The producer is able to make lots of energy by photosynthesis. Then the producer gets eaten by a first-level consumer. This is typically an herbivore (something that eats only plants) but could also be an omnivore (something that eats both plants and meat). Either way, when the first-level consumer eats the producer, it uses most of the energy for its life processes. Life processes are things like growing, having energy to go find more food, reproducing, and caring for young. Surplus energy is stored in the form of fat. This first-level producer gets eaten by a second-level consumer. This might be a carnivore (something that eats only meat) or another omnivore. The second-level consumer can only get the stored energy from its food. This means that there is less energy available to it than there was to the first-level consumer. This chain continues, with less and less energy being available at each step. Because of this fact, there needs to be many producers and low level consumers to support the higher level consumers.


What level of the energy pyramid is a producer found?

The producer level pyramid contain the most energy, because the sun has the most energy as we know, and producers<plants> get their energy from it. As the consumers<herbivores> eat the producers<plants> they will only get 10% of their energy, and the one that will eat them<herbivores> will also get only 10% energy.... so on, & so forth... That's why,the producer level pyramid contain the most energy. :D


Describe the arrangement within energy levels of the seven electrons of an atom of nitrogen?

In every atom, you can only have 2 electons on the first level, and a max of 8 on the next, so after you put the 2 electrons on the first level, you would put the other 5 on the second level.