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elena-14-01-66 [18.8K]
2 years ago
5

Worldwide, renewable energy is the fastest growing source of energy yet it only

Biology
1 answer:
lutik1710 [3]2 years ago
8 0

Answer with Explanation:

<u>Positive</u>

1. They don't create too much pollution, which makes them "clean."

  • It allows us to have a clean air because there's <em>no need of burning them</em> just like the fossil fuels <em>(non-renewable).</em>

2. They don't cost too much to run.

  • The supply of these resources doesn't cost anything at all. For example, solar energy relies on the heat of the sun. The sun's heat is definitely free and can be found in most sunny places.

<u>Negative</u>

1. Setting up is expensive.

  • An example of this is the<em> "wind turbine"</em> that costs millions of dollars in order to set up.

2. The output is affected by many factors.

  • Depending on the kind of renewable resource, most of these are affected by many factors. For example, <em>wind turbines</em> rely on<em> wind's blowing</em> while the<em> hydroelectric powers </em>can be affected by<em> drought.</em>

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A sleepy driver rounds a bend and sees a deer standing in the road. The driver snaps to attention and applies the brakes, averti
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Answer:

A sleepy driver rounds a bend and sees a deer standing in the road. The driver snaps to attention and applies the brakes, averting the accident, because his brain was aroused by the <u> Reticular Activating system(RAS).</u>

<u>Explanation:</u>

  • Reticular activating system (RAS) is a part of brain that filters the sensory signal that tries to reach our brain.
  • However the olfactory Signal do not pass through it .
  • Reticular activating system is located at the brain stem little above the spinal column.
  • This is an extremely important part of the brain because it sorts various sensory signals into important and non-important ones.
  • RAS allows only those information into the brain that needs immediate attention of the conscious mind.
  • Hence it is responsible for sudden wakefulness.
  • Our sensory organs perceive thousands of information each second and direct them towards the brain.
  • If RAS was not there then our brain would have reached a state of confusion every minute and might have failed to give proper response to any of the stimulus.
  • In the given situation, the sudden sight of the deer acted as a threatening stimulus.
  • This information needed immediate attention of the driver's conscious mind and his brain was thus aroused by the RAS.
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