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Evidence for Evolution Stations

Evidence for Evolution Stations. Short Lesson 1: Vestigial Structures. Looking at this picture of a whale’s hidden hind legs and a snake’s tiny legs, what do you think vestigial structure means? Why do you think animals have them?. Discuss with your group mates.

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Evidence for Evolution Stations

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  1. Evidence for Evolution Stations

  2. Short Lesson 1: Vestigial Structures • Looking at this picture of a whale’s hidden hind legs and a snake’s tiny legs, what do you think vestigial structure means? • Why do you think animals have them? Discuss with your group mates.

  3. Short Lesson 2Homologous Structures How about homologous structures? What do you think they are? Why do you think animals have them? Discuss.

  4. Short Lesson 3 Law of Superposition: Meaning The formation of the different layers of soil is a result of the erosion of rocks over millions of years. Natural erosive agents such as wind, flowing water, etc., erode rocks, breaking off small particles from their surfaces. These particles, along with the minerals in them, get broken down into fine soil, which is then deposited on distant plains and other large land masses.As this process continues, many years later, several layers of soil are formed one over the other on the site of deposition, just like the cards in a deck. The card at the bottom of the deck is always placed first while, and as the stack gets built, the one on the top is placed last. Similarly, the topmost layer of soil is the most recent one, while the bottommost is the oldest among the different layers of soil. The law is also applicable to volcanic formations, wherein, molten magma erupts and spreads over older flows, solidifying into a new layer. In such formations too, each new layer formed is younger than the one below it.

  5. Short Lesson 3 Activity 1) Catch the Culprit

  6. Number the events shown in the illustration below, in the order of their occurrence 1 - 7. Short Lesson 3 Activity 2: Arrange the events chronologically

  7. Short Lesson 5: Watch TED ED Why are Sloths So SlowSloths spend most of their time eating, resting, or sleeping; in fact, they descend from their treetops canopies just once a week, for a bathroom break. How are these creatures so low energy?

  8. Short Lesson 4: Watch TED ED Carnivorous Plants Record 5 different methods carnivorous plants employ to capture, lure and digest their prey. Even though all these plants eat prey, they are not closely related. Using your textbook/online resources, explain what is convergent evolution and why carnivorous plants are an excellent example.

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