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Organisms and Their Environment Identify the Abiotic & Biotic Factors in the picture below: Temperature Rainfall Climatograms: The graph shows a biome’s average monthly temperature and average monthly precipitation data on a single graph. Rainfall (cm) • • • • Temperature (celsius) What is the determining factor: Abiotic or Biotic? Months Flow of Energy: Results when an Ecosystem Changes Orca Seals Perch Phytoplankton Otters Sea Gulls Purple Sea Urchins Kelp Water Cycle Carbon Cycle Limited Resources How many of these organisms can live in the environment represented in the graph? Resource Availability 35 30 Number of Units In an environment there is an organism that requires 7 units of water, 4 units of foods, and 2 units of space to survive. 25 20 15 10 5 0 Why can the environment only support the number of organisms? Water Food Space 1. Which statement illustrates a biotic factor interacting with an abiotic factor? a. A sea turtle transporting a pilot fish to a source of food. b. A rock moving during an earthquake c. A plant absorbs sunlight, which is used for photosynthesis. d. Wind cause waves to form on a lake. 2. The presence of a parasite in an animal will result in a. the parasite purposely killing the host animal. b. the host animal becoming ill from nutrients lost to the parasite. c. the parasite and the host animal both benefiting from the relationship. d. the host animal is unaffected by the parasitic relationship. 3. Identify the group that consists of abiotic factors. a. Temperature, light, precipitation, and soil b. Individual, population, community, and ecosystem c. Rock, soil, tree, and squirrel d. Mountain lion, soil, and sunlight 4. The study of interaction between organisms and their interrelationships with the physical environment is known as a. Symbiosis b. Biology c. Ecology d. Abiotic 5. Many different species of organisms interacting in a particular environment are an example of a a. Species b. Biosphere c. Ecosystem d. Community Grasses>Mice>Bobcat 1. The diagram above shows a food chain. If the population of bobcats decreased, what would eventually happen to mice population? a. It would increase b. It would decrease c. It would remain constant d. It would decrease then increase. 2. Which of the following statements regarding predator/prey relationships is accurate? a. There is no relationship between sizes of predator and prey populations. b. The predator population is dependent on the prey population for survival. c. Predator/prey relationships center around a carnivore eating a defenseless herbivore. d. If a prey species is depleted, the predator will automatically switch to another prey species. 3. A resource that is competed for within a population is a a. Density-independent limiting factor b. Density-dependent limiting factor c. Ecological Succession d. Carrying Capacity 4. Biodiversity in an ecosystem is a measure of a. the number and types of organisms that live in the ecosystem. b. the climax community. c. the limiting factors that control the population. d. the predator/prey relationship. 5. The change in an ecosystem over time until a stable stage is reached is known as a. competition. b. homeostasis. c. transpiration d. succession 6. An ecosystem will most likely remain stable if a. It has a high level of biodiversity b. It has more predators than prey c. Biotic factors decrease d. Finite resources decrease