WorksheetsScience
Total questions: 10
Worksheet time: 6mins
This change in their habitat caused most organisms in the ecosystem to change.
What most likely happened to the size of each of the following populations after the removal of the wolves from the food web?
None
Decrease
Cotton wood tree
increase:
Elk, Ravens Fish
no change: Willow trees beavers
Increase:
Elk and ravens
Decrease:
Beavers, Cotton Wood trees, Willow trees
No Change:
Fish
Increase:
ravens, elk
No change:
Cotton wood trees, fish, Beavers, willow trees
Many species of organisms live within a community, and different species live in places such as lakes, streams, and trees. These places are called (a)
In the summer it can get very dry in the taiga which can lead to forest fires. If a huge forest fire burns down hundreds of acres of land, how are other organisms affected?
None
Increase:
Fungi, Pine trees
Decrease:
Caribou, Lynx, Snowshoe hare, Weasels
Increase: Fungi, snowshoe hare
Decrease:
Caribou, Lynx, Weasels, pine trees
Increase:
Lynx, snow shoe hare
Decrease:
fungi, pine trees, Weasels, Caribou,
In some countries today, people have cut down rainforests in order to have wood for heating and cooking. Which statement describes the greatest immediate negative impact of this deforestation?
Ozone layer will be gone
Animals and plants will lose their habitat
The amount of oxygen in the air will dramatically decrease
Acid rain will increase
The amount of available space helps to determine the ideal population size. Which of the following will decrease the space available for a population to live?
conservation
reclamation
hunting
Habitat destruction
___________ can change the organism's environment so much that the species can no longer survive.
Genetic factors
Birth rates
habitat degradation
disease
A new shopping center was built on 50 acres in a forest. Select the most immediate harmful result of destroying the forest to build this shopping center.
Uses too much electricity
Many animals lost their homes when forests were cut
The shopping center will cause a lot of traffic
People will not drive to a shopping center in another town
Which would most likely cause the possible extinction of the grizzly bear?
a forest fire
a drought
a very cold winter
a loss of habitat
Which factor might cause an increase in the deer population in a forest?
deer will be hunted
worst winter in over a hundred years
many wolves and bears getting relocated to a new country
dont care
The size of a habitat helps determine the ideal population size. Habitat destruction ________ the area available to a population.
increases
decreases
randomly affect
does not affect
