- Define biotic and abiotic factors in a forest ecosystem and give two examples of each.
- What do Ecologists study?
- Define populations, communities, and ecosystems. What are the main differences?
- Two species of birds live in an old growth forest. One species, a woodpecker, digs for bugs in the bark of the trees. The other, a songbird, eats small insects in the air and on the ground. What are the niches of these birds and what is their habitat?
- Give a brief definition of mutualism, commensalism, and parasitism as well as one example of each. Do not use any examples that include humans.
- Draw a food chain with four trophic levels for a marine ecosystem. Label the autotroph, first-order heterotroph, second-order heterotroph, and third-order heterotroph. What happens to the available energy as the trophic levels increase?
- What percentage of energy is transferred at each trophic level? What percentage is lost?
- Look at the following terms. In which cycle would you find them and what is their role?
Photosynthesis, Nitrogen-fixing bacteria, Transpiration
- Explain how temperature is a limiting factor for a cactus in the desert.
- A population of catfish survives in a pond that changes between low amounts of oxygen and high amounts of oxygen. Explain what might be happening here in terms of tolerance.
- What are the main differences between primary and secondary succession. Give examples of events that might start both processes as well as examples of a pioneer species for each case.
- Define climax community and give an example of one.
- Study your Biome Chart and Climatogram Lab
- What is does a J-curve represent and give an example of what type of population and the conditions in which it might occur?
- What is does an S-curve represent and give an example of what type of population and the conditions in which it might occur?
- Define carrying capacity.
- Give an example of a slow growth or slow life-history organism and explain the conditions you would find in their habitat.
- How do organisms with a rapid life-history differ from organisms with slow life-history?
- Describe how density-dependent and density-independent factors regulate population growth.
- Complete the Human Population Growth worksheetand review it. Pay special attention to Age Structure.