I think the first one is right !.... but the for the other one it's B .
A type of diagram that shows how energy moves in a ecosystem is a food chain
Monomer of nucleic acid is Nucleotide.
Nucleotide is made up of three components namely- Nitrogenous base, pentose suger and phosphate group.
Depending upon the nucleic acid,i.e RNA or DNA, nucleotide can be Ribonucleoside triphosphate (rNTP) and deoxyribonucleoside triphosphate repectively (dNTP).
Answer:
It is dangerous cause it is polluting the earth which is making glaciers melt and the world a lot hotter.
Explanation:
It is when people burn fossil fuels and dangerous chemicals get into the air.
Hope this helps