Answer:
One reason, it causes global warming
Explanation:
It is a major source of carbon dioxide when it burns.Furthermore, the ash coal produces makes it impossible to get things clean.
Answer:
<em>Hello, In all the ecological pyramids, producers (organisms that produce their own food) are found at the lowest trophic level. This trophic level contains the highest amount of energy. The energy in each trophic level of an energy pyramid is just 10 percent of the energy in the level below it. (Why is there less energy available at the top of an energy pyramid than at the bottom?) Less energy is available to organisms in the upper levels because each organism releases some of the chemical energy in food to the air as thermal energy. Less total energy is available with each step up energy pyramid. Hope That Helps!</em>
Answer:
In RNA the base thymine is essencially replaced by the base uracil. So the sequence TGAC in DNA would get copied into RNA as ACUG.
Adenine pairs with uracil in RNA like it pairs with thymine in DNA
Explanation:
Answer: D) a hollow soccer ball
Explanation:
Carbon is capable of forming many structurally different forms of the same element due to its valency. These forms are called allotropes. One of these is the buckminsterfullerene. It has a cage-like fused-ring structure made of twenty hexagons and twelve pentagons. If you look at this structure, it resembles a soccer ball.
