I believe the answer is oxygen only
Answer:
I think it should be C and D both.
Answer:
Mosquitoes have thin, long bodies and three pairs of extremely long legs. They have scales along the veins of their wings and long beak-like, sharp sucking mouth parts called a proboscis. These two features distinguish mosquitoes from other flies. Mosquitoes also have feathery or hairy antennae.
Answer:
Three examples of fossil fuels are:
1). Petroleum
2). Coal
3). Natural gas