Air pressure gradient. Differences in air pressure cause wind. The greater distance, the faster the wind. Hope this helps :)
Answer:
Cycle: A repeated pattern, The sun: The orgin for the water cycle, The water cycle: The process by which water circulates between the oceans, atmosphere, and land, Evaporation: The sun heats up water and turns it into vapor, Condensation: Water vapor in the air that gets cold and turns into water, Percipitation: water that falls in the form of snow, rain or hail.
Answer: A
Explanation:
Oxygen makes up another 20 to 21 percent of our atmosphere. It's essential for life on Earth, and interestingly enough, it is poisonous when highly concentrated. Our concentration of 20 to 21 percent seems just right.
Eutrophication is the excessive richness of nutrients in water bodies where plant growth is at very dense level
