Answer:
The experimental design involves three fish tanks each containing goldfish and sympatric non-competitive species populations composed of 100 individuals (N = 100), which must be maintained in three different temperature treatments.
Explanation:
1- First fish tank: water to the same temperature than its natural environment (for example 25 C)
2- Second fish tank: water temperature 2°C higher than its natural environment (27 °C)
3- Third fish tank: water temperature 2°C lower than its natural environment (23 °C)
Null hypothesis: temperature treatments does not modify the survival of goldfish populations
Independent variable: temperature treatments
Dependent variable: Goldfish survivance over n generations
Negative control: First fish tank (water to the same temperature than natural environment)
Control group: sympatric non-competitive species populations
