Which lists the parts that make up the biosphere, from smallest to largest?
The biosphere is made up of organisms, populations, communities, ecosystems, biomes, and the entire Earth.
Why are most plants that grow in the tundra small with thin, wax-covered leaves?(1 point)
Which of the following is a common pioneer species?(1 point)
A common pioneer species is lichen.
Which of the following is a common pioneer species?(1 point)
a) oak tree
b) mouse
c) deer
d) moss
d) Moss is a common pioneer species.
In which situation will primary succession most likely occur?(1 point)
a) Trees in a forest ecosystem are cut down for logging.
b) A disease kills off most of the plant species in an ecosystem.
c) A small pond dries up, leaving behind moist soil.
d) Sheets of ice that once covered an area melt away, exposing a layer of rock.