Answer to 9 is b (because bodily fluid is the easiest way to contract a disease)
And answer to 10 is a (because the disease is transferred by saliva)
Answer: 21 percent
Explanation:
According to NASA, the gases in Earth's atmosphere include: Nitrogen — 78 percent. Oxygen — 21 percent. Argon — 0.93 percent.
Answer:
Humans/Animals
Explanation:
Humans breathe in oxygen but when it comes back out it comes through as carbon dioxide. Plants are the exact opposite.
Triton is a moon on planet Neptune
The fur on the wolves or the claws they have.
