Answer:
The independent variable is "controlled" or held constant in the control group.
Explanation:
The central nervous system (CNS), which is made up of the brain and the spinal cord, and the peripheral nervous system (PNS), which is comprised of nerves and ganglia (small concentrations of grey matter).
The brain sends messages to the peripheral nerves in the body via the spinal cord, these have control of muscles and internal organs.
Answer:
D
Explanation:
common sense was used for this problem
As the fertility rate increases, the population will increase. That will probably also have an effect on the region by increasing food security. Hope this helps! So it is as population increases, it also increases food security. Have a BLESSED day! :-) :-)
(C. The dinosaurs became extinct after the Cretaceous time period, after living on Earth for about 165 Million Years
