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