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Some traits tend to show up in populations along with other specific traits. Why is this? Learners explore the phenomenon in part two of the eight-part Introduction to Heredity unit by identifying the presence of three traits: tongue...
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Family Traits and Traditions: A Make-a-Match GameLesson Planet
How do family traditions influence how people look? Learners explore the idea in a match game to complete the final installment of the eight-part Introduction to Heredity unit. Players flip over cards to find matches and, while doing so,...
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Why Are There as Many Males as Females?Lesson Planet
From anteaters to zebras, why are both sexes equally represented in number? Explore a quirk in evolution with a video from a thought-provoking science playlist. The narrator shows examples of species that might only need a few males,...
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These Whispering, Walking Bats Are Onto SomethingLesson Planet
Over millions of years, bats developed flight and echolocation, so why are some bats now walking to look for food? An interesting video explains the changes in predator and prey relationships due to adaptation. Which adaptation is the...
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Why Are Astronauts Weightless?Lesson Planet
Where is gravity when you need it? Explore Earth's hold on the astronauts at the International Space Station. The narrator of a short video asks museum visitors why they think the astronauts float when they are still very close to Earth....
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Why Are Some People Left-Handed?Lesson Planet
Despite what some may think, being right- or left-handed isn't a conscious choice people make. Watch this short video to find out exactly what determines a person's dominant hand, and how the cooperative and competitive nature of humans...
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Why Are Sharks so Awesome?Lesson Planet
Sharks are amazing! They can heat their own blood, they can sense even the faintest of electrical currents, and their sense of smell is is acute. Rather than wanting to eradicate this species, class members can educate others as a result...
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Why Are Earthquakes so Hard to Predict?Lesson Planet
Cell phones to crowdsource vibrations to warn of incoming earthquakes? Detectors to register high levels of radon-thoron isotopes? After detailing the factors that make earthquakes so difficult to predict, the narrator of a fascinating...
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