A simple Energy Balance Climate Model of the Earth with no atmosphere.  Explore the impact of changing solar radiation, Earths albedo, and ocean heat capacity on the Earths temperature by using the sliders in the panel below.

The dynamics of a moose population with  birth and death rates that are the same year in and year out.

Tutorial Sep 18 exercise

The dynamics of a moose population with density-dependent birth rate...the birth rate equals the death rate when the population is at carrying capacity; the birth rate is greater than the death rate when the population is below carrying capacity; the birth rate is below the death rate when the population is above carrying capacity.