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The highest concentration of life exists in the top 200 meters of ocean water. The most important factor that influences this concentration of life is the
a tree removes a gas from the air
commensalism
they roll in a pool of muddy water to avoid fly bites
an ant that lives on a plant and defends the plant from other insects
biotic and abiotic factors (living and nonliving things)
move to other areas that had trees
amount of sunlight
there are few effective predators
In a desert environment, cactus wrens often build their nests in cholla cacti to avoid predators. This behavior does not hurt the cacti. Which type of relationship do cactus wrens and cholla cacti demonstrate?
a tree removes a gas from the air
commensalism
they roll in a pool of muddy water to avoid fly bites
an ant that lives on a plant and defends the plant from other insects
biotic and abiotic factors (living and nonliving things)
move to other areas that had trees
amount of sunlight
there are few effective predators
What relationship is mutualistic?
a tree removes a gas from the air
commensalism
they roll in a pool of muddy water to avoid fly bites
an ant that lives on a plant and defends the plant from other insects
biotic and abiotic factors (living and nonliving things)
move to other areas that had trees
amount of sunlight
there are few effective predators
Which example shows the relationship between a living thing and a nonliving thing?
a tree removes a gas from the air
commensalism
they roll in a pool of muddy water to avoid fly bites
an ant that lives on a plant and defends the plant from other insects
biotic and abiotic factors (living and nonliving things)
move to other areas that had trees
amount of sunlight
there are few effective predators
If farmers cleared a large forest and planted grass, the squirrels that had lived in the forest would most likely
a tree removes a gas from the air
commensalism
they roll in a pool of muddy water to avoid fly bites
an ant that lives on a plant and defends the plant from other insects
biotic and abiotic factors (living and nonliving things)
move to other areas that had trees
amount of sunlight
there are few effective predators
How do moose use a learned behavior to protect themselves?
a tree removes a gas from the air
commensalism
they roll in a pool of muddy water to avoid fly bites
an ant that lives on a plant and defends the plant from other insects
biotic and abiotic factors (living and nonliving things)
move to other areas that had trees
amount of sunlight
there are few effective predators
Rabbits introduced into Australia over 100 years ago have become a serious pest. Rabbit populations increased so much that they displaced many native species of plant eaters. What is the most logical explanation for their increased numbers?
a tree removes a gas from the air
commensalism
they roll in a pool of muddy water to avoid fly bites
an ant that lives on a plant and defends the plant from other insects
biotic and abiotic factors (living and nonliving things)
move to other areas that had trees
amount of sunlight
there are few effective predators
An ocean, a forest, and a grassy meadow are each examples of a complete ecosystem. Complete ecosystems contain
a tree removes a gas from the air
commensalism
they roll in a pool of muddy water to avoid fly bites
an ant that lives on a plant and defends the plant from other insects
biotic and abiotic factors (living and nonliving things)
move to other areas that had trees
amount of sunlight
there are few effective predators
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