What happens after coral is bleached?(1 point)
Responses
The coral produces peroxides.
The coral produces peroxides.
The coral is susceptible to starvation.
The coral is susceptible to starvation.
The coral releases algae on to a sand dune.
The coral releases algae on to a sand dune.
The coral dies immediately.
The coral dies eventually if not recovers.
choose one of the answer choices
The coral is susceptible to starvation.
Marine biologist Dr. James Estes researched sea otters and their habitats in the Aleutian Islands of the North Pacific Ocean. Sea otters feed on animals such as crabs and urchins. Islands with sea otters contained a lot of kelp, a seaweed that is an important food source for fish and other sea animals. However, Islands without otters had large populations of urchins but no kelp since sea urchins feed on this seaweed. Since sea otters are able to control the population of urchins, this allows for kelp to freely grow in those areas. Given this information, what term best describes the otter in the Aleutian Islands ecosystem?(1 point)
Responses
apex predator
apex predator
producer
producer
keystone species
keystone species
decomposer
keystone species
What aspect of an organism makes it an invasive species?(1 point)
Responses
It is from a different ecosystem.
It is from a different ecosystem.
It does harm and is introduced to the ecosystem.
It does harm and is introduced to the ecosystem.
It is harmful to organisms in all ecosystems.
It is harmful to organisms in all ecosystems.
It has no predators in the new ecosystem.
It does harm and is introduced to the ecosystem.
The Kudzu vine was brought to the United States from Japan. Which of the following additional characteristics of the Kudzu vine determined that it was an invasive species?(1 point)
Responses
it has no economic benefit
it has no economic benefit
it was believed to be a "miracle plant"
it was believed to be a "miracle plant"
it protects vulnerable grounds against wind erosion
it protects vulnerable grounds against wind erosion
it grows rapidly, robbing other plants of sunlight
it grows rapidly, robbing other plants of sunlight
Why are invasive species such a huge threat to ecosystems?(1 point)
Responses
Invasive species can do intense damage, so much so that ecosystems may not be able to recover.
Invasive species can do intense damage, so much so that ecosystems may not be able to recover.
Invasive species provide no added benefit or diversity to the ecosystem.
Invasive species provide no added benefit or diversity to the ecosystem.
Invasive species are impossible to control once they are introduced and spread rapidly.
Invasive species are impossible to control once they are introduced and spread rapidly.
Invasive species can replace native species, forcing their migration out of the area.