Question

300
250
wolf population
200
150
100
50
0
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
year
fig 7: wolf population in yellowstone (fws)

1. at which times does the elk population (fig 6) dip below 4000?

highlight the correct answer in yellow (select all that apply)
a. 1927 c. 1995
b. 1969 d. 2013

1. looking at both figure 6 and 7. what are some reasons why the wolf population in fig 7 would have an increasing trend in size?

your answer:

Explanation:

Question 16

To determine when the Elk population dips below 4000, we analyze the options. Typically, in Yellowstone's elk - wolf dynamics, later years (like 1995, 2013) and some mid - century years (1969) see elk population below 4000 due to wolf predation and ecosystem changes. 1927 had few wolves, so elk were higher. So B (1969), C (1995), D (2013) are correct.

From the graphs, as elk population (prey) is sufficient (or when elk population is at a level that can support wolf growth), and with reduced human - caused wolf deaths (conservation efforts), wolves can reproduce and survive more. Also, suitable habitat and lack of major disease outbreaks support the increasing wolf population trend.

Answer:

B. 1969, C. 1995, D. 2013

Question 17