1.

A group of the same species, living together and breeding is known as a .

community

kingdom

population

2.

Non-living factors in an ecosystem are .

biotic

abiotic

antibiotic

3.

Average annual precipitation and are the two major features that define the biomes on Earth.

location

population

temperature

How does natural selection change thephenotypes within a population over time?

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.