Ecosystems Study Guide Test Date: ________________________________________ 1. A community is all the populations that live in an ecosystem. 2. A habitat provides a population with all its needs and includes living and nonliving things. 3. A population is a group of the same kind of living thing that live in the same place at the same time. 4. Ecosystem the living and non-living things that share a common environment. You need to know the following habitats (types of animals, plants, climate, where in the world, etc. all will be general information) Desert- be able to tell me that this includes hot, like the Sahara Desert, and cold, like the Antarctic Desert, and climates Grassland- know that there is not enough rain for trees to grow but too much rain to form a desert Rain Forest- know that there are three parts, canopy, understory, forest floor Forest- know deciduous and coniferous Freshwater- includes ponds, marshes, swamps, streams, rivers Marsh- an area of soft, wet, low-lying land Swamp- flood lands during rainy season with woody plants like trees Saltwater- includes oceans and seas Be able to look at a picture and identify the habitat Know that oceans make up the earth’s largest ecosystem, and that 75% of the earth is covered in water. Know that living and nonliving things interact to help a living thing survive, be able to give examples of how living things use these resources to survive. You should know that environments change over time for a variety of reasons. Earthquakes, pollution, flooding, fires, deforestation, can all cause an environment to change. Not all of this is bad change. For example, sometimes a forest fire can kill small brush and weeds that are keeping the trees from growing. Seeds left buried underground will grow stronger after the fire has cleared away the extra brush. Know living things compete within an environment for resources; this is because all resources are limited. Be able to give an example.