Discuss evolution by gradualism and punctuated equilibrium.

a. both describe the pace/speed/rate of evolution;

b. gradualism suggests that evolution occurs over a long time;

c. gradualism changes are slow/steady over time;

d. gradualism would occur when there is little change in the environment;

e. punctuated equilibrium implies long periods with no change;

f. punctuated equilibrium implies short periods with great change;

g. punctuated equilibrium occurs when there are great changes in the environment;

h. example; (eg: in times of volcanic activity/meteorite impact/great climate change / OWTTE)

i. generally accepted that both ideas take place in evolution

There was a very wide range of answers on gradualism and punctuated equilibrium. Most showed good general understanding, but gave answers that were too incomplete, especially about the required indications of time, as well as magnitude of change.