In an experiment, what is the factor that is tested?
specimen
control
hypothesis
variable
variable
A heat wave that causes an organism to move to a cooler climate is an example of a(n) _____.
stimulus
extinction
speciation
adaptation
adaptation
Which characteristic of life relies on the sun?
reproduction
using energy
adaptation
cell structure
using energy
Which characteristic of life is not essential to the survival of an individual organism?
growth
response
development
reproduction
reproduction
What does temperature measure?
the number of calories
the amount of matter
the amount of heat energy
the number of atoms
the amount of heat energy
Which is not likely to be studied by a biologist?
animals
clouds
swamps
plants