The hypothesis that different populations of "H o m o sapiens" evolved from populations of "H o m o erectus" in different locations around the world is called the ___. a) "Out of Africa" hypothesis
b) directional evolutionary hypothesis
c) multiregional hypothesis
d) "H. sapiens" distribution hypothesis

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

a physical change is being made.