Answer:
Explanation:
Contagious diseases are spread by contact, while infectious diseases are spread by infectious agents. Something "contagious" is by default "infectious" because contact exposed you to the infectious agent, but something infectious isn't always contagious.
Answer:
How scientific research uses the internet to get to know living things
Explanation:
Answer: Decrease
Explanation: Because their foot is being used more.
I think that's what it said.