Which of the following statements is true? Check all that apply.

◯ Over half of Earth’s fresh water is in wetlands near coastlines

◯ Most of Earth’s water would require desalination in order to make it sustainable for consumption

◯ Most of Earth’s fresh water is frozen

◯ The majority of Earth’s fresh surface water is found in rivers.

◯ Rivers and tributaries make up the boundaries between different watersheds

 

Which of the following statements are correct?
1. In fresh water the average concentration of dissolved oxygen is 0.0010 per cent by weight.
2. Oxygen enters the aquatic ecosystem through the air water interface and by the photosynthetic activities of aquatic plants.
Select the correct option from the codes given below:

[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 & 2

Which of the following choices includes all of the others increating global terrestrial climates?
A) differential heating of Earth's surface
B) ocean currents
C) global wind patterns
D) evaporation of water from ocean surfaces
E) Earth's rotation on its axis

Can you please explainthis.