Answer:
Fulcrum
Explanation:
When you use a spoon to prise a lid from a tin you are using a simple machine called a lever. In fact, levers are the basis of many tools in and around your house and work. The way levers operate is by an effort applied at a point, which moves a load at another point through a balance point called the fulcrum.
The answer is B. Snake.
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Microwaves are most energy efficient way to send information.
<h3>What are SETI programs?</h3>
Electromagnetic waves are a general term for familiar light and radio waves, but they also include gamma rays, X-rays, ultraviolet rays, and infrared rays. All of these forms of electromagnetic radiation or waves travel at the speed of light, the highest possible speed. The only difference between these types of electromagnetic waves is their length, or wave, or "wavelength." Another way to characterize waves is the number of waves received per second, since they all travel at the speed of light. This is the wave frequency. A specific range of radio frequencies from 1 GHz to 10 GHz, "microwaves", is particularly well suited for interstellar communications. At lower frequencies, our galaxy emits enormous amounts of radio waves, creating a large amount of background noise. At higher frequencies, the Earth's atmosphere, and possibly other Earth-like planets, absorb and emit a wide range of radio frequencies. The result is a quiet "microwave window" that enables efficient wireless communication.
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A geologist is studying rock layers in an old river bed, and he finds a fossil of a fish and a horsetail rush in the same rock layer. According to the law of faunal and floral succession, the geologist can assume that the rock containing the fossils may date back as far as the <span>Devonian period</span>.
I think it's c because the first 2 it's kind of oves gills and lungs we and fish use theme to live skin i know there a animle that uses it's skin to brith i don;t rember it's name thow sorry i cant spell well but,hope this helped :)