DESCRIBE 2 environmental benefits to living in an urban area. (Make sure to clearly describe your answers and write in complete sentences.)

DESCRIBE how the temperature of urban areas like Atlanta, Philadelphia, and Washington D.C. differs from that of surrounding rural areas. IDENTIFY and DESCRIBE 2 differences between urban and rural areas that contribute to the temperature difference between them. (Make sure to clearly explain your answers and write in complete sentences.)

In evolutionary biology, the term fitness refers to ______________.

The factor that likely poses the greatest threat of extinction of species worldwide is ______________.

The following question refers to the graph below of bird and mammal extinctions over thee centuries Which of the following is the most likely reason that the greatest number of extinctions of bird species occurred in the period 1901-2000?

Which of the following is NOT a key component of the theory of evolution by natural selection?

 Name AND describe the 3 solutions to the tragedy of the commons. (Make sure to clearly describe each answer and write in complete sentences.)

Gray wolves were reintroduced into Yellowstone National Park in 1995, which have since resulted in a trophic cascade through the entire ecosystem. After the wolves were driven extinct in the region nearly 100 years ago, scientists began to fully understand their role in the food web as a keystone species. (a) Define keystone species.  (b) Describe how the reintroduction of the wolves benefitted TWO different species in Yellowstone National Park.  (c) Describe ONE way that the reintroduction of the wolves benefitted humans living near Yellowstone National Park.  (Make sure to clearly describe your answers and write in complete sentences.)

Which species would be most vulnerable to environmental changes?

Why is it so hard to know how many species exist on Earth? Describe at least 2 reasons. (Make sure to clearly describe your answers and write in complete sentences.)