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Q 1/15
Score 0
Where does the energy to drive the hydrologic cycle come from?
30
the sun
plate tectonics
Earth's interior
photosynthesis
Q 2/15
Score 0
The amount of precipitation that soaks into the soil depends on
30
o whether or not there are plants around.
whether the soil is wet or dry.
all of the choices
how long the rain lasts.
15 questions
Q.
Where does the energy to drive the hydrologic cycle come from?
1
30 sec
Q.
The amount of precipitation that soaks into the soil depends on
2
30 sec
Q.
The amount of water on Earth is __________.
3
30 sec
Q.
Scientists feel that human activity has affected and possibly altered the natural process of the carbon dioxide-oxygen cycle that nature had previously kept in balance. In recent history, how have humans added more carbon to the carbon dioxide-oxygen cycle?
4
30 sec
Q.
What causes an increase in the oxygen level in the atmosphere?
5
30 sec
Q.
All of the following add carbon to the atmosphere EXCEPT –
6
30 sec
Q.
What is the most common way that nitrogen fixation occurs?
7
30 sec
Q.
Synthetic fertilizers add _____________ to the soil.
8
30 sec
Q.
Eutrophication in coastal waters can cause an increase in
9
30 sec
Q.
Phosphorus is difficult for plants and animals to access in nature because _________.
10
30 sec
Q.
Without phosphorus, living beings cannot grow, reproduce, or move. This is because phosphorus
11
30 sec
Q.
Which of the following statement is correct about Phosphorus Cycle?
12
30 sec
Q.
Sulfur can be added to the atmosphere by
13
30 sec
Q.
How are humans trying to be proactive in reducing our sulfur emission?
