Question

the great golden coqui extinction
table 1: coqui frog population changes
year unfavorable conditions equilibrium conditions favorable conditions
0 15 15 15
1 11 2 8
2 11 2 5
3 11 2 5
4 4 9 6
5 2 5 4
6 12 6 7
7 4 5 5
8 7 5 9
9 3 10 10
10 5 7 5
11 4 9 6
12 5 8 8
13 8 4 5
14 11 5 7
15 5 9 4
16 9 12 7
17 4 1 4
18 5 12 5
19 9 4 5
20 5 6 4
graph the data from table 1 above on the back of this page, then use the graph and data table to answer the analysis questions below.

1. why are the three graphs not identical?
2. why might an increased birthrate among the frogs eventually lead to a negative outcome?
3. list two things that might cause a population of frogs to increase over time:

a.
b.

1. list two things that might cause a population of frogs to decrease over time:

a.
b.

1. what makes a population remain in equilibrium (stays the same) over time?
2. when human activity causes a population of other organisms to reach a critically low size, is it enough to simply stop what were doing and hope the population numbers recover? what must be done to help the numbers recover?
3. the cane toad is a large (6-15 in.) toad that was introduced to australia in 1935 to help control local beetle populations. the toad, however, secretes a toxic poison from its skin. what effect might this problem have on the native australian species of animals in the area?

Explanation:

Answer:

1. The three graphs represent different environmental conditions (unfavorable, equilibrium, favorable) that impact the frog population differently over time.
2. An increased birthrate may lead to resource scarcity (food, space), causing competition, starvation, or increased spread of disease, leading to population decline.
3. A. Abundant food supply

B. Lack of natural predators

1. A. Habitat loss or destruction

B. Increase in predator population

1. A balance between birth rates and death rates, stable availability of resources, and no major environmental disturbances or changes.
2. No, stopping harmful human activity alone is often not enough. Targeted conservation efforts like habitat restoration, supplementary feeding, reducing remaining threats, and possibly captive breeding and reintroduction are needed.
3. Native Australian species that prey on the cane toads may suffer population declines or extinction due to poisoning, disrupting the local food web and ecosystem balance.