Name: __________________________ Date: ______________ period: ______ Midterm Exam review Vocabulary Define the following: 1. Independent variable 2. Dependent variable 3. Control group 4. Observation 5. Inference 6. Biodiversity 7. Adaptation 8. Species 9. Competition 10.Predator 11.Prey 12.Food chain 13.Food web 14.Energy pyramid 15.Producer 16.Consumer 17.Herbivore 18.Carnivore 19.Omnivore 20.Scavenger 21.Decomposer 22.Population 23.Community 24.Ecosystem 25.Symbiosis 26.Mutualism 27.Commensalism 28.Parasitism 29.Limiting factors 30.Carrying capacity 31.Primary succession 32.Secondary succession 33.Evaporation 34.Condensation 35.Precipitation 36.Photosynthesis 37.Pollution 38.Greenhouse gas Define and give three examples of the following: 1. Fossil fuels 2. Renewable resources 3. Nonrenewable resources Answer the following: 1. List two primary causes of global warming. 2. What is a negative effect of nuclear energy? 3. In which direction do the arrows go in a food chain or food web? 4. Which organisms are often missing from a food web? Why are they important? 5. Which organisms are always on the bottom of an energy pyramid? Why? 6. Which living things in the pond ecosystem, pictured above, break down dead plants and animals?