Below is an image of three warbler species that all play a similar role in their community and occupy a similar habitat. So instead they occupy different niches. Use these images and the information from lecture to explain what has happened to these species and why this change would be necessary.

Recent published research has documented declines in flying insect populations. Describe two main threats to the survival of flying insects and one thing that we will we lose from our planet if flying insect species become extinct. Describe two ways in which we might prevent this catastrophe from worsening.

Based on the data (and your graph), which of the native species will be least affected by the introduction of the bullfrogs? Please provide EVIDENCE to support your CLAIM.

A group of researchers are interested in whether temperature has an affect on time to metamorphosis in a species of frog. Eggs from a single pond were obtained and raised at either 15°C or 25°C until metamorphosis completed. Time (days) 15°C 25°C 360 379 375 353 354 299 378 349 385 323 359 298 371 301 355 375 μ 367.1 334.6 S 11.66 33.85 Time to metamorphosis at 25°C quantile Time to metamorphosis at 15°C quantile 385 380 375 370 365 360 355 +3 -1.5 380 360 340 320 300 -1.0 -0.5 00 05 10 1.5 Normal quantile -1.5 -1.0 -0.5 00 0.5 1.0 Normal quantile a) List the potential statistical tests that could be used to test the researcher's hypothesis, how they compare in terms of power, and the assumptions made by those tests. (3 marks) b) Based on the data, which test should be used? Provide a brief explanation and test any assumptions, as necessary to come to your conclusion. (4 marks) c) Conduct a statistical analysis using that test. (8 marks)