Life Schience Ch. 22 Crossword
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
                                           
 
 
Down: 1) an organism that is carried into a new location by people.2) an organism that cannot make their own food. They obtain energy by feeding on other organisms.3) movement of organisms from one place to another. It can be caused by wind, water, or living things, including humans.5) trees that produce their seed in cones and have leaves shaped like needles. Most of the trees in the boreal forest are this type.6) an organism that breaks down wastes and dead organisms and returns the raw materials to the ecosystem. Nature's recyclers.7) an extremely cold and dry biome10) area that is populated mostly by grasses and other woody plants. They receive 25 to 75 cm of rain each year.12) the study of where organisms live.14) where the fresh water of a river meets the salt water of the ocean. Many animals use this place for breeding grounds because it is calm.16) shows the amount of energy that moves from one feeding level to another in a food web. The most energy is available at the producer level of the pyramid. Energy level decrease as you move up the pyramid.17) the frozen soil on the tundra19) the layer of plants in a rainforest below the canopy. these plants grow well in the shade.20) a group of land ecosystems with similar climates and organisms. most of these that are studied are the rain forest, desert, grassland, deciduous forests, boreal forest and tundra21) consists of many overlapping food chains in an ecosystems. The first organism in this web is always the producer. The second organism feeds on the producer and is called a first level consumer.25) consumers that eat only plants. Ex. deer and caterpillars Across: 4) the leafy root that some trees in a rain forest form.6) trees that shed their leaves and grow new ones each year. Ex. oaks and maples8) consumers that only eat animals. Ex. lions and spiders9) la series of events in which one organism eats another and obtains energy.11) consumers that eat both plants and animals13)  a carnivore that feeds on the bodies f dead organisms. Ex. catfish and vultures15) the process of changing free nitrogen to a usable form of nitrogen. This process is usually performed by certain kinds of bacteria.18) an area that receives less than 25 cm of rain per year. The amount of evaporation is greater than the amount of precipitation.22) grassland that is located closer to the equator than prairies. They receive as much as 120 cm of rain each year.23) the typical weather pattern in an area over a long period of time.24) the region of shallow water below the low tide line that extends over the continental shelf.26) process by which molecules of liquid water absorb energy and change to a gas. The energy for this comes from the sun.27) an organism that can make its own food. They are the source of all the food in the ecosystem
 

 

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