Which of these best describes Earth’s core? A. Most dense layer, consists of the outer and inner parts.
B. Thinnest under the oceans and thickest under continents.
C. Middle layers, density increases with depth and pressure increases.
D. Least dense layer overall, consists of two layers of different thickness.

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