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Q 1/20
Score 0
Which three organisms in the food web are competing for the same food resource?
60
carrot, rabbit, fox
grain, bird, owl
bird, mouse, grasshopper
fox, owl, rabbit
Q 2/20
Score 0
How have the size of the human population and the amount of carbon dioxide (CO2) in the atmosphere changed from 1960 to 1990?
60
Both the human population and the amount of CO2 have increased.
Both the human population and the amount of CO2 have decreased.
The human population has increased while the amount of CO2 has decreased.
The human population has decreased while the amount of CO2 has increased.
20 questions
Q.
Which three organisms in the food web are competing for the same food resource?
1
60 sec
Q.
How have the size of the human population and the amount of carbon dioxide (CO2) in the atmosphere changed from 1960 to 1990?
2
60 sec
Q.
Which human activity might explain the change in carbon dioxide levels shown in the graph?
3
60 sec
Q.
The effects of natural selection are generally seen most quickly in which organisms?
4
60 sec
Q.
Which substance provides humans with their main source of energy?
5
60 sec
Q.
Weathering and erosion of Earth’s crust are primarily caused by
6
60 sec
Q.
Which statement is true of all rocks?
7
60 sec
Q.
All matter is made up of particles called
8
60 sec
Q.
As altitude increases, air pressure
9
60 sec
Q.
What was the approximate height of the water on the tide marker at 6 p.m.?
10
60 sec
Q.
If shell fragments are found in a rock sample, it is most likely that the rock formed
11
60 sec
Q.
Which weather event usually includes heavy precipitation, strong winds, and surface air temperatures below
0ºC?
12
60 sec
Q.
Which term refers to the atmospheric conditions that prevail from season to season and year to year at a
certain location?
13
60 sec
Q.
Which process is mostly responsible for the breaking down of the rock cliff into sand-sized sediment?
14
60 sec
Q.
The apparent position of the fish is different from the actual position of the fish. What has happened to the
light passing through the water to cause this difference?
15
60 sec
Q.
In which compass direction will both dogs most likely move?
16
60 sec
Q.
Which drawing best shows the actual size and shape the rock will have after being carried several hundred miles
downstream and deposited?
17
60 sec
Q.
Some kinds of fish live most of their lives in salt water but lay their eggs in freshwater. Their ability to survive in
different environments is an example of
18
60 sec
Q.
Which three organisms in the food web are competing for the same food source?
19
60 sec
Q.
Which energy transformation is best shown in the diagram?