Question

What happened to the Galapagos Finches?

POPULATION SIZE OF FINCHES FROM 1975-1978
- Population Size
1600
1450
1400
-1400
1200
1227
1175
1000
866
800
600
637
400
15
261
200
199
0
01/75 05/75 09/75 01/76 05/76 09/76 01/77 05/77 09/77 01/78 05/78 09/78
Observation: Population Size
Using the above graph of the finch population of Galapagos Island, Daphne Major, analyze
and collect the requested information (complete sentences):
1. Provide quantitative and qualitative data as for an instance of positive population
growth. Include population values and time periods (2 points).
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Answer 1

Unavailability of food decrease their population.

Step-by-step explanation:

The population of Galapagos Finches decreases because of unavailability of food. Galapagos Finches feeds on a specific insects whose population decreases on that Island that leads to the death of the Galapagos Finches and they decrease in number. Positive population growth occurs only if more food is available to the Finches or they adapt another food item for themselves which fulfill their need of food.