Question

d. 6.5 per cent.
d. Revolution of earth
Time to Learn
1. The total amount of freshwater present on earth is about
33 per cent
b. 4.5 per cent. . c. 5.5 per cent.
2. The upper part of a sea wave is called
a. crust.
d. trough
c. summit.
bacrest.
3. What is the main cause for the occurrence of tides?
a. Planetary winds b. Rotation of earth c. Gravitational pull
4. Which of the following is not an important cause for the occurrence of ocean currents?
a. Earth's rotation
b. Gravitational pull c. Prevailing winds
5. Which of the following is a cold current?
a. Gulf Stream.
b. Brazil current c. Monsoon Drift
d. Density of water
d. Peru current​

Answer 1

the correct answers are...

1→a

2→c

3→b

4→d

if it is wrong then, mark it as brainliest...

and if it is right then too mark it as brainliest...

Chemical weathering typically increases as temperatures rise and rain falls, which means rocks in hot and wet climates experience faster rates of chemical weathering than do rocks in cold, dry climates.

Physical weathering occurs more often in cold climates, because the different minerals within rocks expand and contract at different rates when they are heated and cooled. Repeated heating and cooling cycles eventually cause rocks to fracture. Desert and mountain climates experience a wide range of temperatures from low to high during a day and night, which accounts for the breakdown of rocks known as physical weathering.

Biological weathering occurs when living organisms break up rocks. Tree roots, for example, can fracture rocks in the same way they buckle pavement. Warm, humid climates are most favorable to life. Contrast the rich diversity of life in a rainforest, for example, with the scarcity of life in the dry Sahara or the frigid Antarctic. Consequently, rates of biological weathering are most rapid in warm humid climates like those in tropical regions.