What characteristics of living things best explains why some North American birds fly south for the winter?

How does a person get an opportunistic disease?

Which term refers to water's attraction to different substances?

Comment on the fact that at present in South Africa it is legal for big game hunters to shoot rhinos as trophies.

In this assignment, you will use simulations to analyze how climate, resources, and habitat size affect carrying capacity. You will then look at another simulation to analyze the effects of certain factors that affect biodiversity and populations.

Theories can be proven by observations alone. T or F?

Salt deposits form on a car in the winter. Over time, the salt covers more of the car. Is the salt alive? a. Yes, salt deposits are alive because they maintain their structure. b. No, salt deposits are not alive because they do not reproduce. c.

Belinda recently completed a treatment program for breast cancer. For the last year, she took a drug treatment that worked to interfere with rapid cell division; what type of cancer treatment did Belinda undergo?

What do scientists call the theory that the universe will shrink in the future?

Which types of stress on the earths crust is due to tectonic plates colliding?

This is my last question. A certain location with many tall trees experiences a wildfire for several days. Which of the following will most likely happen in the location? Pollution will decrease. Bird population will increase.