On the big island of Hawaii, exotic mouflon, a kind of wild sheep, live in herds. These animals collectively form an isolated ______________.

• organization

• ecosystem

• population
• community

Which of the following is a benthic organism?

• blue whale (Balaenoptera musculus)

• great white shark (Carcharodon carcharias)

• hermit crab

• jellyfish

A herd of cows grazing in a field inadvertently tramples some insects living among the grass. What type of symbiosis exists between the cows and the insects?

• commensalism

• amensalism

• neutralism

• mutualism

Tags

NGSS.MS-LS2-2

The term biodiversity refers to

• the amount of habitat available in an area.

• the number of species in an area.

• the total number of organisms in an area.

• all of these.

Tags

NGSS.MS-LS2-5

Which of the following can affect the climate of a biome?

• large bodies of water

• elevation

• latitude

• all of these

Tags

NGSS.MS-ESS2-6

On a mountain, temperatures and precipitation are insufficient to grow trees above a certain elevation called the __________.

• timberline
• snow line

• permafrost

• rock line

Competition can occur between

• organisms of different species.

• organisms using the same resource.

• organisms of the same species.

• all of these.

Tags

NGSS.MS-LS2-2

Mutualism is a type of __________ in which two different species live in a mutually beneficial relationship.

• sympathy

• symbiosis
• competition

• empathy

Tags

NGSS.MS-LS2-2

The proportionality of the populations of species relative to each other is known as ________________.

• species distribution

• species evenness
• species factor

• species richness

Which region of the choices below does not lie in the biosphere?

• mountains

• oceans

• lower atmosphere

• Earth’s mantle