Why are models useful to understand ecological systems? Group of answer choices They allow for investigation of scenarios that do not currently exist They can be manipulated They are simplified representations of ecological systems

What do ecologists study? Ecologists can study the interactions of organisms and the environment by focusing on different levels: individuals, populations, communities and ecosystems. Below are different questions that ecologist could ask and investigate. Place the question under the level of ecology is would fit in. Think before you drop - This is an all or nothing type of question. Double check that you are happy with where you placed all of the options before you submit the knowledge check. Individual Population No Answers Chosen No Answers Chosen Community Ecosystem No Answers Chosen No Answers Chosen Possible answers E How do marine iguanas survive without fresh water? : What processes are involved with cycling of nitrogen in a grassland? | How do lungfish survive in water with low oxygen? | How does the slope of a beach affect the diversity of sand dwellers? What is the carrying capacity fro bighorn sheep in the Mojave? What factors restrict the number of birds that can nest in a…

Which of the following statements about ecological communities is false? An ecological community consists of interacting populations. An ecological community consists of multiple species. An ecological community consists of interacting individuals in the same area and at the same time. Ecological communities are dynamic. An ecological community is a group of interbreeding individuals of the same species.

QUESTION 5 Which statement does NOT apply to ecological studies? A unit of time might be the "unit of observation" The sample size is the total number of people on whom the data is based They are subject to the ecological fallacy of applying population level associations to individuals They generally use statistics that have already been calculated for the groups as the variables Confounding is very difficult to control for with most ecological data