Presentation on theme: "Studying the Web of Life.. Any nonliving thing is an abiotic factor. Write at least 4 examples 1. oxygen 2. carbon dioxide 3. sunlight, temperature."— Presentation transcript:
A biotic factor is any living component that affects another organism, including animals that consume the organism in question, and the living food that the organism consumes. Each biotic factor needs energy to do work and food for proper growth. Biotic factors include human influence.organismanimalsfood Biotic components usually include: Producers Consumers Decomposers
Abiotic and biotic components influence each other. For instance, temperature (abiotic factor) can make plants (biotic factor) reproduce more or reproduce less. Also water, an abiotic factor, has an effect on how animals, a biotic factor, survive in certain areas of the world. In Africa, for instance, the migratory patterns of most herbivores are based where water is the most plentiful. When the dry season comes, the animals must move to where the food and water are most abundant.
A population is a group of individuals of the same species in the same area. For example, all the alligators in the same river make a population. The whole population uses the same area for food and shelter.
A community is made up of all the different populations that live and interact in the same area. The different populations in a community depend on each other. For example, alligators eat other animals, including fish.Alligators create water-filled holes where fish and other organisms in the river can live during dry seasons..
An ecosystem is made up of a community and its abiotic environment. The abiotic elements provide resources for all the organisms and energy for some. A river, for example, can provide water for river plants and many animals, and shelter for water insects. It can provide nutrients for plants, as well as food for fish and alligators.
The biosphere is the part of Earth where life exists. The biosphere is the largest environmental level. It reaches from the bottom of the ocean and the Earth’s crust to high in the sky.
Organism, populations, community. Can you identify the following:
Section Quiz. Match the correct term to the definition a. abiotic b. Community c. Ecosystem d. Population e. Biosphere f. Biotic 1. a group of organisms of the same species living in the same area 2. the nonliving part of the environment 3. all the populations of species that live and interact in the same habitat 4. the part of Earth where life exists 5. a community of organisms and their abiotic environment 6. the living parts of the environment
Write the letter of the correct answer. 7. What word describes the mammals, fish, birds, and plants that live in an environment? a. abiotic c. the biosphere b. the population d.biotic 8. A community is several species of animals interacting, while a population is a. members of one species in an area. b. the biotic and abiotic elements of an area. c. the nonliving elements of a habitat. d. a single organism.
9. The five levels of organization in the environment, from first to fifth level are a. organism, population, biosphere, ecosystem, community. b. organism, population, biotic elements, abiotic elements, community. c. organism, population, community, ecosystem, biosphere. d. organism, population, biosphere, abiotic elements, ecology. 10. Which of the following is abiotic? a. gar c. grass b. an alligatord. water