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Mashcka [7]
3 years ago
15

A student drops some metal paper clips in a box of sand. The student uses a magnet to separate the metal paper clips from the sa

nd. The reason this works is that the sand and paper clips together are _____. A) a mixture B) an element C) a compound D) a substance
Biology
2 answers:
lilavasa [31]3 years ago
8 0

Answer:

The answer is mixture.

Step-by-step explanation:

A mixture is a material that consists of two or more different physically combined substances; in this scenario the things are paper clips and sand.

Here, the student uses a magnet to separate the metal paper clips from the sand. So, here sand and paper clips together are a mixture.

sveticcg [70]3 years ago
4 0
A) A mixture because they can be taken apart without changing the physical form
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Semenov [28]

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Explanation:

3 0
3 years ago
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Answer:

DNA polymerases from human cells will denature under these conditions.

Explanation:

Under the PCR conditions described, DNA polymerase from <em>T. aquaticus </em>would be more effective than DNA polymerase from human cells. This is due to the higher optimal temperature of DNA polymerase from <em>T. aquaticus. </em>

6 0
3 years ago
Which of the following is an example of a weather event?
solong [7]

The correct answer is C. A windstorm blew down trees in the Boundary Waters Canoe Area in Minnesota on July 4, 1999.

Explanation:

A weather event refers to a specific phenomenon in weather that in most cases is not common but particular and specific, which is different to weather patterns, this includes specific hurricanes, abnormal rain patterns, etc. Considering this, the one that is an example of a weather event is "A windstorm blew down trees in the Boundary Waters Canoe Area in Minnesota on July 4, 1999" because this is a specific phenomenon rather than a pattern in weather as int the case of hurricane seasons or permanent weather conditions.

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3 years ago
What is the process by which heat is trapped in the atmosphere?
kari74 [83]
This is called the Green house effect
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