Question

1. elk in national forests

fremont basin national forest

year	# elk	# wolves	# acres of healthy grass land
1930	126	5	1950
1935	115	6	2100
1940	120	5	2000
1945	120	4	2050
1950	125	5	1950

rose mountain national forest

year	# elk	# wolves	# acres of healthy grass land
1930	130	0	1900
1935	150	0	1500
1940	190	0	1000
1945	230	0	500
1950	350	0	0

1. which national forest has a stable population of elk?
2. which national forest has a healthy grassland that grows back when eaten by elk? how can you tell?
3. which population might have a population crash or die - off? why?

Explanation:

1. For the first question, in Fremont Basin National Forest, the elk population fluctuates around 120 - 125 from 1925 - 1950, showing relative stability compared to Rose Mountain National Forest where the elk population steadily increases.
2. For the second question, Fremont Basin National Forest has a healthy grass - land as the acres of healthy grassland fluctuate around 2000 and increase in some years, indicating it can regrow. In Rose Mountain National Forest, the acres of healthy grassland steadily decrease to 0.
3. For the third question, the elk population in Rose Mountain National Forest might have a crash as the healthy grassland is depleted (acres reach 0 by 1950), and there are no wolves to control the population.

Answer:

1. Fremont Basin National Forest
2. Fremont Basin National Forest. The acres of healthy grassland fluctuate and increase in some years.
3. Rose Mountain National Forest. The healthy grassland is depleted and there are no wolves to control the population.