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WorksheetsBalance in Ecosystems
Total questions: 13
Worksheet time: 11mins
In any biome across the world, what would be an impact of losing an organism from its food web?
an increase in its population
an increase in populations that eat that organism
a decrease in the number of scavengers in an area
a decrease in the biodiversity of the region
Why is it extremely important to maintain biodiversity in plants that make up the human diet?
to reduce pollution
to reduce famines
to increase precipitation in an area
to increase the colors for bee pollination
In an ecosystem, organisms are constantly interacting with each other (competing for resources, predator/prey relationships, etc.). Over time, what should happen in a healthy ecosystem?
all the organisms eventually die out
the resources will all be used up
a stable balance among all organisms will occur
too many predators will take over an ecosystem
Over the course of 20 years, scientists see that the populations of all species in an ecosystem have decreased. What is likely true about this ecosystem?
the plants health decreased but the animal health increased
the overall health of the ecosystem is declining
the overall health of the ecosystem is improving
the animal biodiversity increased while the plant biodiversity decreased
What will happen to the chinstrap penguin if the phytoplankton die out?
the penguin population will decrease because they eat organisms that depend on phytoplankton
they will not be affected because the penguins do not eat phytoplankton
the penguins will start eating all the phytoplankton
the penguin will start eating the seals instead
Palm trees are native to warm, tropical ecosystems. What could explain why scientists found a palm tree fossil in Antartica?
the ocean currents carried the palm seeds to a far away island
birds carried the palm seeds to the far away place
over time, continental drift caused the island to move from a tropical area to its current location
the entire world used to be one, large tropical island
Coral is an organism found in shallow, warm tropical waters near the equator. What explanation can be given for why a coral fossil was found in Wisconsin?
there is a large ocean next to Wisconsin
hurricanes blew the coral from the ocean to Wisconsin
deep ocean currents moved the coral pieces to North America
the continents have drifted north, but long ago it was in a tropical location
What would be an explanation for finding fossils in ash between sedimentary rock layers?
a volcanic eruption likely killed the organisms
the climate changed drastically and killed the organisms
the region was below sea level
the fossils were found on the peak of a mountain
How does mining and strip mining affect an ecosystem?
it takes away all the groundwater
it cause soil erosion so plants cannot grow
it takes away all pollution from an area
it improves the overall quality of life for organisms in the region
In any food chain, which would be the worst case scenario?
all the apex predators die off
the plant eaters have a large population increase
the plants begin to die off from pollution
the winter lasts longer than usual
Famines, droughts, fires, and natural disasters cause organisms in a ecosystem to...
have parasitic relationships
increase competition for resources
destroy each other
change niches
To care for forests, workers often intentionally set fires. This is considered good for the plant and animal life in a region. How could this be helpful?
the smoke in the air helps organisms get an increase in oxygen
everything is destroyed in the fire's path
it only burns the bark on the tree
it clears away species that are invasive to the forest
If the rabbits, began to die out, how would this affect the buzzard and the fox?
the fox would be more affected since they feed on fewer animals than the buzzard
there would likely be no change at all
the buzzard and the fox would be equally affected
the buzzard would be affected more since they feed on more animals than the fox
