Based on the data below, which group of animals are genetically diverse?
# of different type of species in the world
Birds 9,000+
Bears 8
Horses 350+
Whales 90
(1 point)
Responses
bears
bears
whales
whales
horses
horses
birds
birds
Which biome best supports animals that feed mostly by grazing on grasses and small shrubs?(1 point)
Responses
mixed forests
mixed forests
tropics
tropics
savanna
savanna
polar desert
savanna
Which describes a primary role of the pioneer species in an ecosystem?(1 point)
Responses
protect other species from danger
protect other species from danger
provide food for small animals
provide food for small animals
prevent fertile soil from washing away
prevent fertile soil from washing away
What happens after coral is bleached?(1 point)
Responses
The coral dies immediately.
The coral dies immediately.
The coral produces peroxides.
The coral produces peroxides.
The coral is susceptible to starvation.
The coral is susceptible to starvation.
The most biodiverse ecosystem in the world is likely a(1 point)
Responses
coral reef.
coral reef.
cold desert.
cold desert.
tundra.
tundra.
taiga
coral reef
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
decomposer
decomposer
producer
producer
keystone species
keystone species
apex predator