What are the levels of ecology, from the smallest level to largest level?

What is thought to have caused the mass extinction at the end of the cretaceous period?

Why are common names a problem for scientist?

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