Select the two main organs of the central nervous system.
brain
nerves
spinal cord
neurons

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems

What does the hardy-weinberg principle relate to? a. chances of survival of an organism b. frequency of alleles in a population c. natural selection in a species d. causes of evolution among organisms

The dense layer of connective tissue that surrounds an entire skeletal muscle is the