Ascending tracts contain
a. only cell bodies
b. motor fibers
c. cerebrospinal fluid
d. only unmyelinated axons
e. sensory fibers

Choose the correct words to complete the sentences related to genetic screening. is a procedure that is used during pregnancy to detect genetic defects. is extracted from the uterus and used to identify genetic disorders?

Match the following terms and definitions. 1. species that are adapted to live in equilibrium at carrying capacity population density 2. population growth that reaches equilibrium and carrying capacity population 3. death rate mortality 4. birth rate k-selected 5. a group of interacting individuals of the same species within the same geographic area natality 6. the number of organisms living in a particular area logistic growth

What might explain the real-world results, show in the graph to the right, for one class of twenty students? check all that apply.