During extinction, an instrumental behavior may initially increase as the result of
a. a failure of the dog to obey the new instruction.
b. an extinction burst.
c. temporary defiance.
d. punishment resistance.

In 1992, hurricane andrew left a wake of destruction through florida. one victim of the storm was a reptile-breeding facility. over 900 burmese pythons were set free, and today thousands of pythons live in florida. these pythons are an invasive species, or a harmful species not native to the region. 1. what impacts do you think the burmese pythons might have on local ecosystems

Nh3 +02-no + h20 is unbalanced what is the balanced equation

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of