Which statement best describes the difference between the sympathetic and parasympathetic nervous systems? A.
The sympathetic system prepares the body for stress and activity and the parasympathetic system prepares the body for rest.
B.
The sympathetic system contains the brain and spinal cord and the parasympathetic system contains the peripheral nerves.
C.
The sympathetic system sends signals within the brain and the parasympathetic system sends signals between the brain and the body.
D.
The sympathetic system controls voluntary body movements and the parasympathetic system controls involuntary functions.

Elements and compounds are pure substances that cannot be broken down physically into a simpler substance. a physical change doesn’t break the bonds between atoms of a substance or form new ones. compounds can be broken down by a chemical change. a chemical change breaks chemical bonds and/or forms new ones between atoms of a substance. what simple substance would a compound break into? the basic elements that make it up! for example, if you passed a very strong electric current through water you’d break the chemical bonds in water and be left with oxygen and hydrogen. which of the following is an example of a chemical change? a separating water into different glasses b breaking frozen ice cubes with a hammer c running an electric current through water d boiling water to evaporate it on a stove

What feature of cell theory is best demonstrated in the image

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an