Why would anadromous salmon be considered good indicators of both marine and terrestrial ecosystem health? A. they require both clean fresh and marine aquatic biomes to live B. they feed on and help feed many other organisms. C. they supply entire watersheds with nutrients D. all of the above (A-C)

1. Two predators feed on small antelope. One predator weighs 100 kg, and the other weighs 35 kg. Explain what might happen if the two predators share the same area. 2. Wolves are reintroduced into a park. As a result, the vegetation changes. Explain how the changes to the vegetation happened.  3. Find out about the niche of wolves in their community. Determine if they are a keystone species. Then, write a one-page essay describing their role in their ecosystem.

Many argue that government freshwater subsidies promote the expansion of productive farmland, stimulate local economies, and help to keep food and electricity prices low. Do you think this is reason enough for governments to continue providing subsidies to farmers and cities? Why or why not? Incorporate what type of feedback would be needed to garner enough legislative support for your position.

7. How are orcas being affected by the loss of salmon? Orcas are being affected by the loss of salmon because S. Is raising salmon in a hatchery really more cost-effective than preserving salmon in the wild? Explain. 9. What are fish farms and why are they a concern? 10. How is the loss of salmon going to affect human health?

a. spring semester b. fall semester c. either semester

Humans are not autotrophic, this means we     a. cannot manufacture our own nutrients.     b. require calorie dense foods.     c. produce our own body heat.     d. produce salty body fluids.   Morbidity refers to     a. the number of cases of disease per unit of population occurring over a unit of time.     b. the first occurrence of menstruation.     c. the number of deaths attributable to a particular per unit of population over a unit of time.     d. the statistical likelihood of a person dying from a particular cause.

85. An ecologist collects three related beetle species – one from a tropical rain forest, another from a desert and the third from the tundra. Back in the lab, she places all the beetles in a warm, dry environmental chamber and measures water loss across the cuticle. From highest to lowest rate of water loss, how would you expect the three species to rank? a. tropical rain forest > desert > tundra b. desert > tundra > tropical rain forest c. tundra > desert > tropical rain forest d. desert > tropical rain forest > tundra e. tropical rain forest > tundra > desert 86. What do you think would happen to a cell if minor DNA damage occurred that caused the cell to "pause" at a checkpoint during the cell cycle, and then the DNA damage could not be fixed? a. The cell would stay paused at that stage of the cell cycle indefinitely. b. This would not occur, since once initiated progression through the cell cycle cannot be stopped c. A macrophage will sense the problem and kill the cell. d. The…

Use the food web diagram to the right to answer questions 1-3 Squid Mackerel Bluefish Killifish Snapper Copepod Herring Diatoms Seal Larvae Orca

The physical surroundings in which a species is normally found is its    A. Community  B. Habitat  C. Home range    D. Niche

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.