I think the answer for this Question is DNA
The answer is; B
The carbon cycle exists in the atmosphere mainly as carbon dioxide. The levels of carbon dioxide change can change dramatically over years. The movement in and out of carbon in the atmosphere is fast and influences by factors such as combustion and photosynthesis. The former increases carbon in the atmosphere whole the latter decreases it.
Answer:
D I think you are welco!e
Answer:
a yeast cell is a unicellular organism
Explanation:
they have a nucleus and organelles characteristic of more complex life forms. they are kind of like a plankton. they don't use cell signaling pathways like our cells would. I hope this helps. this question was a little difficult for me, but I hope I gave you enough info to help you out! :)
Answer:
I. solid waste material settle out
Explanation:
In the primary sedimentation stage, sewage flows through large tanks, commonly called primary sedimentation tanks. The tanks are<u> used to settle sludge while grease and oils rise to the surface and are skimmed off.</u> Primary settling tanks are usually equipped with mechanically driven scrapers.
On the other hand, bacteria break down 85%-90% of organic matter is a <u>biological step</u> in the sewage treatment plant. Chlorine, ozone, or ultraviolet light are used in the <u>chemical step</u> of the sewage treatment plant.