How does the nervous system help the body maintain homeostasis?
O A. It causes reflex actions when sudden action is needed.
O B. It balances the autonomic and somatic systems.
O C. It uses neurons to block the effect of hormones.
O D. It sends messages that control all the systems in the body.

Which heredity condition causes a buildup of mucus in lungs and pancreas? a. cystic fibrosis b. heart disease c. huntington's disease d. sickle cell anemia

How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?

Which soil would most likely be found in the arctic? andisols gelisols histosols spodosols