Use these classroom resources to help your students develop a better understanding of the cradle of civilization. Lake Huron, Lake Ontario, Lake Michigan, Lake Erie, and Lake Superior make up the Great Lakes.phenomenon where gases allow sunlight to enter Earth's atmosphere but make it difficult for heat to escape.gas in the atmosphere, such as carbon dioxide, methane, water vapor, and ozone, that absorbs solar heat reflected by the surface of the Earth, warming the atmosphere.period in the year when crops and other plants grow rapidly.the gathering and collection of crops, including both plants and animals.practice of caring for roaming groups of livestock over a large area. Use these resources to teach middle school students about biomes around the world.An abiotic factor is a non-living part of an ecosystem that shapes its environment. All rights reserved.Climate is the long-term pattern of weather in a particular area.Earth Science, Meteorology, Geography, Physical Geographyto adjust to new surroundings or a new situation.to change or modify something to fit with something else.the art and science of cultivating land for growing crops (farming) or raising livestock (ranching).having to do with the surrounding area or environment. Continental climates are only found in the Northern Hemisphere.region that experience cool summers and snowy winters.icy part of the Earth's waterincluding icebergs, glaciers, and ice caps.to encourage the growth of something through work and attention.learned behavior of people, including their languages, belief systems, social structures, institutions, and material goods.structure built across a river or other waterway to control the flow of water. In a terrestrial ecosystem, examples might include temperature, light, and water. In fact, the word Mesopotamia means "between rivers" in Greek.