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Advanced-Level Science Projects: Botany

BotanyAdvanced-Level Science ProjectsBotanyHow Close to a Plant Must Pesticides Be in Order to Be Beneficial?Can Healthy Plants Be Grown in Soil Containing No Microorganisms? Can Cloning Make a…

Look at These Prices!: Tinkering with Markets

Tinkering with MarketsLook at These Prices!IntroductionLet's Stretch: Elasticity of DemandWhat Determines Elasticity?Tinkering with MarketsThe Price You Gotta Pay Up to now we have been examining…

calorie

(Encyclopedia) calorie, abbr. cal, unit of heat energy in the metric system. The measurement of heat is called calorimetry. The calorie, or gram calorie, is the quantity of heat required to raise the…

air navigation

(Encyclopedia) air navigation, science and technology of determining the position of an aircraft with respect to the surface of the earth and accurately maintaining a desired course (see navigation…

Post-9/11 Changes By the U.S. Government

Has the government's response to 9/11 compromised civil rights in the name of national security? by Beth Rowen USA Patriot Act and Domestic Spying | Department of Homeland Security |…

Homework Center: Numbers and Formulas

Subjects » Geography» History» Language Arts» Mathematics» Science» Social StudiesHomework Skills Writing | Research Speaking & Listening Studying Reference Sources…

DK Science & Technology: Time

HOW DO WE MEASURE TIME? DOES TIME BEGIN AND END? BIOGRAPHY: ALBERT EINSTEIN German, 1879–1955 RELATIVITY FIND OUT MORE We use time to say when an event happened or how long it lasted.…

DK Science: Earthquakes

FAULTSEISMOLOGYFIND OUT MOREEarthquakes are caused by movements of the giant tectonic plates that form Earth’s crust. SEISMOLOGY is the study of earthquakes. Most occur at cracks called…

DK Science: Liquids

COHESIONVISCOSITYVOLUMEFIND OUT MOREAs water flows along a river, it constantly changes its shape to fit the space available. This is because water is a liquid, and liquids flow and do not have…