Structural and functional units of the nervous system.

a. axon
b. myelin sheath
c. dendrites
d. glial cells
e. neuron

Which of the following is not a main characteristic that scientists focus on when determining which kingdom an organism belongs to

Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error?

How is the national wildlife refuge system similar to the pacific region coastal program? a. both programs are concerned with providing habitats for wildlife b. both programs are primarily concerned with preserving fish species c. both programs have set aside 150 million acres of land d. both programs are under the u.s. fish and wildlife service