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During this lesson, we learned about the interactions between organisms and other living things and non-living things around them.

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During this lesson, we learned about determining population size, population distribution, population density, age structure, and sex ratios. A population is made up of one type of species. Species can make up

different populations that are geographically isolated from one another.

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During this lesson, we learned about population growth and factors that affect it - populations increase in size when more individuals enter the population than

leave it and it decreases when more individuals leave it than enter it.

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Human activities that occur on and are directly related to land. During this lesson, we learned about land cover types in Egypt and human uses of land types in Egypt.

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During this lesson, we learned about the different sources of water in Egypt and the percentage of total water use that each source provides, some of the challenges that Egypt faces in managing its water resources, and the steps to improve Egypt's use of rainwater

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During this lesson, we learned about the uses of water: agricultural, industrial, and personal, using surface water, using groundwater, and solutions to freshwater depletion.

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During this lesson, we learned about the types of water pollution, categories of point and nonpoint water pollution, and solution to decrease the amount of water pollution.

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During this lesson, we learned about the three types of pollution (air, land, and water) in depth. We learned about the causes, the impact and the solutions.

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During this lesson, we learned about renewable and non-renewable energy. We went in-depth into their types, advantages, disadvantages, and impacts.

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During this lesson, we learned about factors affecting climate, finding the cause of climate change, finding the cause of climate change, and Responding to climate change.