Answer: National park service
Explanation:
I wrote a paragraph summing the importance of Carbon a while back, see if it helps find your answer. :)
Carbon is an element on the periodic table with the symbol C, and the atomic number 6. There are many reasons that carbon is vital to life on earth, not only to humans but to plants as well. First of all, humans are made of eighteen percent carbon. It is not only found in humans, it is also found in every organism currently known, including plants in a technological way. To plants, carbon flows inside of their cells. They need it to create glucose which then works as food. To humans, it's used in many science sets. It is used in a vast array of compounds including gasoline. Gasoline is what keeps motors around the world running, and it's made up of hydrocarbons with at least 5 carbon atoms each. It also aids the greenhouse effect, keeping the earth warm and habitable by human beings.
The control group outs the one that you don't change. The reason you don't change it is because you use it as a comparison with the other groups.
Answer:
the heart it is because the heart beats and it goes up and down
Answer:
The reason why the final answer may be surprising to a lot of people is that
Onion is not a fruit, it is a vegetable while banana is a fruit; likewise, lemons and they are both yellow fruits.
Because they are both yellow fruits, one may have the thought that a lemon and a banana are more closely related.
It may also be confusing to lots of people because some plants that produce vegetables are more closely related to plants that produce fruits and it goes vise versa.
