Earths surgace is covered with water yet only of the earth's water is freshwater

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

What is the relationship between groundwater and aquifers?

Countries in this region are trying to achieve development. a. attainable c. sustainable b. suspendable d. intangible