Why is the chimpanzee population falling? A. The number of chimpanzees has dropped since the 1970s. B. Chimpanzees live in Equatorial Africa. C. Chimpanzees are losing their homes.

Why are many animal species losing their homes and food? A. Because people are building on their habitats. B. They are in danger of extinction. C. Because people are eating their food.

It ______ (begin) to rain and we got wet.

What does "ambition" mean? Do you have any ambitions in your life?

What does "encourage" mean? How do you encourage people around you during their hard time?

What does "predict" mean? What do you predict the weather will be like in 20 years?

(Joel Sartore photographs many species of wildlife) because he loves nature. reason / result

Since sea turtles' bodies are filled with toxins, (it is dangerous to eat them). reason / result

My husband and I _____ (go) on a day trip to the mountains.

What does "adapt" mean? How do you adapt to new environment?

What does "effect" mean? Can you tell one effect of climate change?

Which of the following is NOT a reason why birds build nests in trees? A. The leaves give them shade. B. Leaves on trees hide the birds from animals that want to eat them. C. Many small birds build nests.

Why is the muskox population getting bigger? A. Because they almost became extinct in the early 20th century. B. Because they are over-hunted for fur and meat. C. Because hunters are restricted from over-hunting the species.