8. What evidence in paragraph 12 of "Scratching the Surface of Mars" supports that life has existed on Mars in the form of water?

Which statement about spreading knowledge of diseases and health around the world is correct?

The u.s. intervened in korea and vietnam to stop the spread of

For 50 points.. some organisms feed on other organisms without immediately killing them. what term describes this act? a. predation b. commensalism c. mutualism d. parasitism