A person standing on a platform of length 300 meters observed that a train takes 15 seconds to pass him, passed completely through the platform in 40 seconds. Them the length of the train (in meters) is

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#Question id: 9253

#Unit 9. Diversity of Life Forms

A certain species of pine tree survives only in scattered locations at elevations above 2,800 meters in the western United States. To understand why

this tree grows only in these specific places, an ecologist should ________.

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#Question id: 23187

#Unit 13. Methods in Biology

Which of the following is true about photoactivable fluorescent proteins?

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#Question id: 26455

#Unit 3. Fundamental Processes

The length of the RNA–DNA hybrid within the bubble is only of

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#Question id: 2343

#Unit 2. Cellular Organization

What advantage would a plant cell have over an animal cell if both were placed in pure water

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#Question id: 11445

#Unit 7. System Physiology – Animal

When the mammalian brain compares the actual temperature of the body to the preferred temperature of the body, which general component is being used?