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skelet666 [1.2K]
3 years ago
11

One student did an experiment to find out if fertilizer can make plants grow taller. The steps of the experiment are listed belo

w. Take three pots of the same size. Fill the pots completely with the same type of soil. Plant tomato seeds in the pots of soil. Add different amounts of fertilizer to the three pots. Keep the first pot inside the house, the second pot under the shade of a tree, and the third pot in direct sunlight. Add the same amount of water to the pots every day. Measure the heights of the plants after regular intervals. The results of the experiment were not valid. Which of these statements best describes a flaw in the experiment?
Biology
2 answers:
Kruka [31]3 years ago
3 0

That is wrong. The answer is actually the letter B

nasty-shy [4]3 years ago
3 0

The amount of fertilizer was not the controlled variable.

A control variable is the one which does not receive any treatment in the experiment. Instead it is used to compare the changes in the experimental variable. The control variable remains unchanged in an experiment.

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r-ruslan [8.4K]
Advantages of asexual reproduction:
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Disadvantages of asexual reproduction:
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4 0
3 years ago
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ladessa [460]

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Explanation:

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Then, the protons are the positive energy that is on the atom’s inside.

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4 0
3 years ago
Read 2 more answers
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Hunter-Best [27]
Had to look for the options and here is my answer. 
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3 0
3 years ago
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In-s [12.5K]

Answer:

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Carbon dioxide is needed in carbon fixation during the Calvin cycle. Without it, 6 carbon sugars cannot be formed.

Water is needed for photolysis to produce protons (maintain the electrochemical gradient) and electrons (to replenish lost electrons)

Chlorophyll are pigments that harvest light energy to excite electrons produced from photolysis of water to be passed down the electron transport chain.

Light is needed as a source of energy to energise the electrons

5 0
3 years ago
¿cual es la institución responsable de velar por la conservación del medio ambiente?
BaLLatris [955]

Answer:

La institucion se llama Ministerio de Medio Ambiente y Recursos Naturales.

Explanation:

7 0
3 years ago
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