A pioneer species is the first species in a barren area.
A pioneer species(1 point)
Responses
requires more shade than established species.
requires more shade than established species.
hunts other species.
hunts other species.
outcompetes native species.
outcompetes native species.
is the first species in a barren area.
is the first species in a barren area.
9 answers
After an extreme disturbance, what is the first thing to form in an ecosystem?(1 point)
Responses
sand
sand
a group of lichens
a group of lichens
rock
rock
the plant community
Responses
sand
sand
a group of lichens
a group of lichens
rock
rock
the plant community
After an extreme disturbance, the first thing to form in an ecosystem is a group of lichens.
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 strip away trees and destroy everything as they move.
They strip away trees and destroy everything as they move.
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 leave behind bare rock with no established ecosystem.
They leave behind bare rock with no established ecosystem.
They will never grow back after they melt.
Responses
They strip away trees and destroy everything as they move.
They strip away trees and destroy everything as they move.
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 leave behind bare rock with no established ecosystem.
They leave behind bare rock with no established ecosystem.
They will never grow back after they melt.
The melting and subsequent retreat of glaciers is considered an extreme disturbance because they leave behind bare rock with no established ecosystem.
Currently, which event is having the greatest effect on the entire interconnected ocean ecosystem?(1 point)
Responses
plastic pollution
plastic pollution
hurricane
hurricane
oil drilling
oil drilling
tsunami
Responses
plastic pollution
plastic pollution
hurricane
hurricane
oil drilling
oil drilling
tsunami
Currently, the event having the greatest effect on the entire interconnected ocean ecosystem is plastic pollution.
Volcanic eruptions can ___(1 point)
Responses
drastically alter the ecosystem.
drastically alter the ecosystem.
increase biodiversity.
increase biodiversity.
draw animals to the area.
draw animals to the area.
add nutrients to the surrounding soil.
Responses
drastically alter the ecosystem.
drastically alter the ecosystem.
increase biodiversity.
increase biodiversity.
draw animals to the area.
draw animals to the area.
add nutrients to the surrounding soil.
Volcanic eruptions can drastically alter the ecosystem.