If a bar of copper is brought near a magnet, the copper bar will be repelled by the magnet (B). Copper itself is not magnetic, but it sets up electric currents when a magnet is brought close to a bar of copper. These electric eddy currents push the magnet away from the copper bar. Magnetism and electricity are related and the interaction between the copper and a magnet is used in power plants to generate the electricity that we use every day.
Answer:
A. A thick layer of fat for insulation
Explanation:
Taiga is one of the world's coldest biomes. It includes the Canadian and Alaskan regions. Both taiga and marine mammals have adaptations that make it easier for them to survive in the harsh winter conditions. The mammals will be protected from the harsh winter environment and cold water by a thick layer of insulation. It will aid in the maintenance of homeostasis in mammals.
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I believe the sentence is too vague.
Standing water is not good for the environment so it needs to be vanished and shall no longer be around humans or animals that can catch the deadly disease malaria !
Answer:
<u>Step 1: Determine which options are correct </u>
<em>What will the economy be like in the future? </em>
- Option A: too broad
<em>How can virtual reality be used in health care? </em>
- Option C: effective
<em>How many gallons of water will we use in 2025? </em>
- Option B: too narrow
<em>What are the best strategies for increasing food production in the future? </em>
- Option C: effective
For the first question, the reason why it is too broad is because the economy in the future is a huge topic. It will not be able to be covered in one topic. In questions two, the reason why the answer is effective is because this is a specified research question in a wide category. For the third question, the answer is too narrow because there is really no use of knowing how much gallons of water we will use in 2025. Finally, in the fourth question the answer is effective because it is a specified research question in a specific topic/category.
<em>See the attachment for clarification</em>