Question

1. over 2 billion people on earth use water every day, yet earths water supply remains relatively constant because

a. the sea level is rising.
b. water exists in three phases on earth.
c. water is constantly recycled by the hydrologic cycle.
d. global warming melts ice and replaces water that is used.
the graph below illustrates arctic sea height from 1995 to 2015.

1. based on the data in the graph, which of the following represents the approximate change in arctic sea level from 1995 to 2015?

a. 60 mm
b. 10 mm
c. 7 mm
d. 3 mm

1. which of the following is least likely to be a bad effect of global warming?

a. loss of fertile delta regions for agriculture
b. change in global patterns of precipitation
c. decreased rate of photosynthesis in vegetation
d. increased frequency of hurricanes

1. what is the source of energy that drives earths climate (it has the biggest effect on our climate)?

a. plants
b. fossil fuels
c. photosynthesis
d. sun

Explanation:

Step1: Analyze question 11

Read the graph for sea - level values in 1995 and 2015.
In 1995, the Arctic sea - level is approximately 10 mm. In 2015, it is approximately 70 mm.

Step2: Calculate the change

Subtract the 1995 value from the 2015 value. $70 - 10=60$ mm.

Step3: Analyze question 12

Understand the effects of global warming.
Loss of fertile delta regions, change in precipitation patterns, and increased hurricane frequency are well - known negative effects of global warming. An increased rate of photosynthesis in vegetation is not a negative effect.

Step4: Analyze question 13

Recall the energy source for the hydrologic cycle and climate.
The sun provides the energy for evaporation, which drives the hydrologic cycle and has a major impact on the climate.

Answer:

1. a. 60 mm
2. d. Increased frequency of photosynthesis in vegetation
3. d. sun