7. True or False: The majority of scientists agree that climate change is real 3 points and caused by humans.
True
False

True

Explanation:

If ya want a explanation you can go to this Link Nasa made an article about it And no i am not a bot

https://climate.nasa.gov/faq/17/do-scientists-agree-on-climate-change/

Another Link from Quora:https://www.quora.com/Is-it-true-that-99-of-scientists-agree-that-the-climate-is-changing-because-of-human-actions

true

Explanation:

due to damage of ozone layer

effects of greenhouse

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.