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WorksheetsHuman impact
Total questions: 12
Worksheet time: 24mins
Invasive species are:
Non-native
Harmful to an ecosystem
Organisms that lack predators In a new environment
All the above
The number one threat to biodiversity
Pollution
Fragmentation
Habitat destruction
Limiting factors
Why might an introduced animal species overrun native species in an ecosystem?
It’s population is smaller than those of native species
More energy efficient
Predator of the native species
No natural enemies
problem caused by increased levels of CFC's in the atmosphere
global warming
thermal pollution
greenhouse effect
ozone depletion
Pollution can cause harm to the ___________
Air
Land
Water
All the above
Continued depletion of the ozone layer will most likely result in
An increase in skin cancer
a decrease in atmospheric pollutants
an increase in marine ecosystem stability
a decrease in climatic changes
In lakes that are exposed to acid rain, fish populations are declining. This is primarily due to changes in which lake condition?
Size
Temperature
Ph
Location
Damage to the ozone shield over the United States is likely to cause
increased warming of local ecosystems
increased exposure to ultraviolet light
reduction in the pH of acid precipitation
reduction in the frequency of floods and droughts
When taken to a new habitat, non-native plants often threaten native plants of the new habitat. Why do they do this?
Non-native plants are able to mutate rapidly
Non-native plants cause native animals to relocate
Non-native plants are able to be used for medicine
Non-native plants compete with native plants for resources
What makes a species invasive?
Moving to a new ecosystem and taking resources from natives
Not having papers
Species can’t adapt
That take up too much space
What kind of organisms can become invasive?
Lion tigers and bears
Plants, Animals, or Pathogens
Plants
yeast
The lack of natural predators makes populations of invasive species unmanageable?
True
False
