Match the time frame listed on the left with the characteristic listed on the right

Mesozoic era

?

Age of the dinosaurs

Paleozoic era

?

Most of Earth a desert

End of the

Mesozoic era

?

A layer of iridium

deposited all over Earth

Many kangaroo rats live in the sonoran desert of the southwestern united states. they have a variety of adaptations for living in the desert. under which circumstance would the kangaroo rats of the sonoran desert be most likely to develop new adaptations by natural selection?

How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.

Which short-term environmental change is most likely to lead to ground shifting, landslides, and the collapse of buildings or roads? forest fires flooding earthquakes