Which of the following lead to the decline of grey wolf population in the US northwest in the early 1900s? A. disease B. starvation C. hunting

Lower birth rates and declining family size in recent years reflect what phenomenon? A. Carrying capacity B. Secondary succession C. Exponential growth  D. Demographic transition

What happened to large animals in the areas where our species migrated?    A. We domesticated them soon after we migrated into their area   B. They died out soon after we migrated into their area   C. Nothing happened to large animals when we migrated into their territories   D. They increased in number soon after we migrated into their area

In the case of the Ebola outbreak in the Democratic Republic of the Congo (then called Zaire) in 1976, how did the virus first transmit to humans?   A. A teacher ate a wild bat   B. A teacher ate a wild antelope   C. Scientists are still unsure   D. A mosquito bit a teacher

The accoumulation of higher levels of mercury in large predatory fish is a result of? A. Genetic modification B. Biomagnification C. Food addtivies D. Irradiation

What would the seasons be like if the axis of rotation of earth was tilted at an angle of 10 degrees instead toward or away from the sun? a. no change b. less exaggerated seasons c. more exaggerated seasons d. there would be no change in the average temperature between the poles and the equator.

A researcher who is interested in the number of individuals in a population of black bears and their movement patterns would most likely use which method?    A. Area-based counts    B. Point sampling    C. Line transects    D. Surveys for black bear tracks    E. Mark-recapture