The average speed of a greyhound dog increases gradually in succeeding generations after only the fastest of a brood are allowed to interbreed. what is this variation an example of?

genetic drift

stabilizing selection

directional selection

disruptive selection

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air

Identify the composition of oceanic and continental crystal rocks.in a model of earth’s interior,where would these rocks appear?

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