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A pioneer species(1 point)

Responses

outcompetes native species.
outcompetes native species.

is the first species in a barren area.
is the first species in a barren area.

requires more shade than established species.
requires more shade than established species.

hunts other species.

After an extreme disturbance, what is the first thing to form in an ecosystem?(1 point)
Responses

a group of lichens
a group of lichens

sand
sand

the plant community
the plant community

rock
rock
The melting and subsequent retreat of glaciers is a long process that may take centuries. Why is something so slow considered an extreme disturbance?(1 point)
Responses

They will never grow back after they melt.
They will never grow back after they melt.

They leave behind bare rock with no established ecosystem.
They leave behind bare rock with no established ecosystem.

They move giant boulders and change the physical shape of the landscape.
They move giant boulders and change the physical shape of the landscape.

They strip away trees and destroy everything as they move.
They strip away trees and destroy everything as they move.
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Currently, which event is having the greatest effect on the entire interconnected ocean ecosystem?(1 point)
Responses

tsunami
tsunami

hurricane
hurricane

oil drilling
oil drilling

plastic pollution

Volcanic eruptions can ___(1 point)
Responses

increase biodiversity.
increase biodiversity.

add nutrients to the surrounding soil.
add nutrients to the surrounding soil.

draw animals to the area.
draw animals to the area.

drastically alter the ecosystem.

1 answer

Here are the correct responses to your questions:

  1. A pioneer species:

    • is the first species in a barren area.

  2. After an extreme disturbance, what is the first thing to form in an ecosystem?

    • a group of lichens

  3. The melting and subsequent retreat of glaciers is a long process that may take centuries. Why is something so slow considered an extreme disturbance?

    • They leave behind bare rock with no established ecosystem.

  4. Currently, which event is having the greatest effect on the entire interconnected ocean ecosystem?

    • plastic pollution

  5. Volcanic eruptions can:

    • add nutrients to the surrounding soil.

Feel free to ask if you have more questions or need further information!