The punctuated equilibrium model of evolution suggests that new species appear

The increased efficiency of fishing has led to

Environmental catastrophes are a requirement of natural selection.

Most dinosaurs became extinct at the end of which of the following periods of the Mesozoic?

The requirements of large amounts of fossil fuels and fertilizers in modern agriculture is one of the reasons that human society is unsustainable.

Which of the following types of compounds have been implicated in ozone depletion?

How do forests regulate global climate?

Natural selection can favor directional, stabilizing, and disruptive selection in the same population simultaneously.

Which of the following is true about human population growth?

All of the following are true about equilibrium populations except