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
clouds
Changes that make a species better able to live in new areas are _____.
extinction
evolution
adaptations
speciation
adaptations
In an experiment, there are two groups. Which group is not changed in any way?
experimental
variable
control
hypothesis
control
Which of the following units of length would be most appropriate for measuring the distance between Los Angeles and Las Vegas?
kilometer
centimeter
millimeter
meter
kilometer
The ability to _____ is an adaptation to avoid predators.
eat plants
capture sunlight
move
reproduce
move
The scientific method can best be described as a plan or set of _____.
experiments
procedures
theories
hypotheses
procedures
Which is the basic unit of life?
the cell
an organism
a tissue
the community