At which aquatic ph do all fish in lakes die ?
a. 4.2
b. 6.0
c. 5.5
d. 4.5

Based on their location in the atmosphere, the layers are able to have their own special characteristics. for example, most weather occurs in the troposphere. what occurs in each of the other layers? (site 1)

What is hydroelectric power produced by?

What is the correct term for an area of rotating currents in an ocean? when ocean currents combine, they create an area of rotating currents called an