Question

1. look at the graph below. based on the rates of change, in which time period 1980 - 1982 or 1986 - 1991 was there more likely to have been a drought? wildebeest population vs. year 1980 1500000 wildebeest population 1982 1986 1991 1000000 500000 0 1960 1970 1980 1990 2000 2010 year 1980 - 1982 because the rate of change was more negative and more wildebeest were dying. 1984 - 1986 because the rate of change was more negative and more wildebeest were dying. 1980 - 1982 because the rate of change was less negative and more wildebeest were dying. 1984 - 1986 because the rate of change was less negative and more wildebeest were dying.

Explanation:

Step1: Analyze rate of change in 1980 - 1982

In 1980 - 1982, population seems to decline.

Step2: Analyze rate of change in 1986 - 1991

In 1986 - 1991, population also declines but less steeply.

Step3: Determine drought - related period

A more negative rate of change in 1980 - 1982 implies more wildebeest dying, likely due to drought.

Answer:

1980 - 1982 because the rate of change was more negative and more wildebeest were dying.