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Novosadov [1.4K]
3 years ago
7

How does music affect plant growth? To answer this question, Dr. Anderson set up an experimental chamber and exposed a group of

15 bean plants to the same 60-minute rock CD twice a day, at 9:00 A.M. and 9:00 P.M. Another group of 15 bean plants was placed in a different chamber with the same temperature, light, and humidity, but these plants weren't exposed to music. One month later, the heights and masses of all 30 plants were measured and compared. In this example, what's the independent variable? Question 3 options: The light The use of music The temperature The time the experiment was conducted
Biology
1 answer:
Ivanshal [37]3 years ago
3 0

Answer:

The use of music

Explanation:

<em>The independent variable in the example is the use of music.</em>

The independent variable in research or experiment is a variable whose value is not affected by any other variable. That is, the value of an independent variable is not influenced by any other variable.

<u>In this case, the use of music stands alone and is not influenced by any other variable in the experiment. In actual fact, the use of music's effect is being tested in the experiment and hence, is not in itself influenced by any other variable.</u>

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Holly is a healthy woman who is 22 years of age. using this information, calculate her target heart rate zone for moderate-inten
guajiro [1.7K]

Answer:

99 to 138.6 bpm

Explanation:

The heart rate of an individual is a measure of how many times the heart beats in a given time, usually measured in beats per minute (bpm).

Resting heart rate is the number of beats per minute when an individual at rest. Generally, it can be understood that the lower the resting heart rate, the more physically fit an individual is.

The maximum heart rate for an individual is 220 minus their age. The target heart rate for moderate physical activity is 50-70% of the maximum heart rate and for vigorous physical activity it is 70-85% of the maximum heart rate.

Based on Holly's age, her maximum heart rate is 220 - 22 = 198 bpm

Her heart rate zone for moderate physical activity is 50-70% of 198 bpm: 99 to 138.6 bpm

Her heart rate zone for vigorous physical activity is 70-85% of 198 bpm: 138.6 to 168.3 bpm

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3 years ago
Growing food in urban areas could improve full security worldwide
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Answer:

yes i hope that helps

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8 0
3 years ago
Three phases of interphase
GREYUIT [131]
The 3 phases of interphase can be broken down into the first growth phase of the cell - G1 phase. Then the S phase, where DNA replication and or DNA synthesis occurs to duplicate the number of chromosomes in the cell. Followed by the G2 phase, an additional growth phase and where specific protein come into play along with organelle and cellular component duplication.
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2 years ago
A red blood cell placed in distilled water will swell and burst due to the movement of Your answer: A.salt from the distilled wa
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Answer:

B

Explanation:

Water moves from higher potential to lower potential i.e it moves from surounding to the cell.

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Other scientists hypothesize that organic compounds could have come to Earth_____.
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