Answer:
When you exercise, the muscles you use require more energy. When exercise can be sustained, this demand is met primarily by aerobic means. Aerobic energy production in muscles results in increased gas exchange at the lungs, because more oxygen is taken in and more carbon dioxide is released.
Explanation:
B.
The other options all tell you the type of nucleic acid it is.
Answer:I dont know
Explanation:
you can find out from the valence electrons 1 is most reactive then 7 then 2 3 so on
Answer:
Lobe-finned fish are thought to be the close relatives to tetrapods because of the fact that the fins are very flexible and potentially useful for supporting the body on land, as in lungfish and tetrapods.
Explanation:
Sorry I am a week late in answering this but it helps people later. The answer I got was this:
Groundwater is an important source of freshwater, partly because it accounts for approximately 30% of the Earth's freshwater.
I know this is a little late but I hope it helps you later on.
