Answer:
Insects use air-filled tubes called tracheae to exchange oxygen and carbon dioxide between their tissues and the air. This network of tubes is also called a tracheal system. Insect body contains small openings on the outer surface called spiracles. Spiracles are connected to the internal tubes.
Answer:
Small cells have a smaller surface-to-volume ratio than
larger cells.
I think it lived about 50 million years ago because I know for sure it has to be greater than 10,000 because that is the minimum. It states that fossils are dated more than 10,000 years. Don’t take my word yet, wait for other replies,I could be wrong
Yes, it is possible to develop effective vaccines for any type of viruses. Genetically engineered viruses exhibit similar characteristics to natural viruses.
<h3>What is a virus?</h3>
A virus is a genetically independent entity that needs a suitable host to reproduce its genetic material (either DNA or RNA).
A genetically engineered virus is a virus whose genetic material has been modified using genetic engineering techniques.
Vaccines can be developed for removing any type of viruses because they take advantage of the intrinsic properties of the immune system (i.e., antigen recognition), independently of its origin.
Learn more about viruses here:
brainly.com/question/25236237
Answer:
Carbon source.
Explanation:
The ocean is storing carbon, it is a carbon source.
It's storing the carbon until it's needed in the carbon cycle.