Which lists the parts that make up the biosphere, from smallest to largest?(1 point)
Responses
organism, population, ecosystem, community, biome
organism, population, ecosystem, community, biome
population, organism, community, ecosystem, biome
population, organism, community, ecosystem, biome
organism, population, community, ecosystem, biome
organism, population, community, ecosystem, biome
biome, ecosystem, community, population, organism
Why are most plants that grow in the tundra small with thin, wax-covered leaves?(1 point)
Responses
The plants need to survive the hot temperatures in the summer.
The plants need to survive the hot temperatures in the summer.
The plants need to be able to grow in sandy soil.
The plants need to be able to grow in sandy soil.
The plants need to survive the year-round dry conditions.
The plants need to survive the year-round dry conditions.
The plants need to be able to grow in the moist, humid air.
Which of the following is a common pioneer species?(1 point)
Responses
moss
moss
deer
deer
mouse
mouse
oak tree
oak tree
In which situation will primary succession most likely occur?(1 point)
Responses
A small pond dries up, leaving behind moist soil.
A small pond dries up, leaving behind moist soil.
Sheets of ice that once covered an area melt away, exposing a layer of rock.
Sheets of ice that once covered an area melt away, exposing a layer of rock.
A disease kills off most of the plant species in an ecosystem.
A disease kills off most of the plant species in an ecosystem.
Trees in a forest ecosystem are cut down for logging.
Trees in a forest ecosystem are cut down for logging.
Which statement describes a difference between primary and secondary succession?(1 point)
Responses
Primary succession can more easily be observed than secondary succession.
Primary succession can more easily be observed than secondary succession.
Secondary succession occurs over a shorter time period than primary succession.
Secondary succession occurs over a shorter time period than primary succession.
Primary succession supports a greater variety of organisms than secondary succession.
Primary succession supports a greater variety of organisms than secondary succession.
Secondary succession supports a more limited number of organisms than primary succession.