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Llana [10]
2 years ago
12

Scientists are interested in how the severity of acid deposition affects the soil of the red spruce forests. They design a labor

atory experiment in which rainwater of different pH values is used to water soil samples taken from red spruce forests. The soil samples are the same size and contain the same ratios of sand, silt, and clay. The same amount of water is sprayed on the soil samples every day for a week. Through the experiment, the scientists measured the concentration of toxic forms of aluminum in the soil samples. Identify the likely scientific question being investigated in the experiment.
A. How does the amount of aluminum in the soil affect the pH of the rainwater?
B. How does the pH of rainwater affect the concentration of aluminum in the soil samples?
C. How does the composition of the soil affect the pH of the rainwater?
D. How does the number of days watered affect the concentration of aluminum in the soil samples?
Biology
1 answer:
Goshia [24]2 years ago
5 0

The best question for this experiment is How does the composition of the soil affect the pH of the rainwater?.

<h3>What are the best factors being studied?</h3>

The main factors based on the description are:

  • The pH of the rainwater: This is the factor manipulated by the researcher.
  • The aluminum concentration: This is the factor researchers are evaluating.

<h3>What is the best question?</h3>

The best question would be one that relates the main two factors. Based on this, the best question would be: "How does the composition of the soil affect the pH of the rainwater?".

Learn more about rainwater in: brainly.com/question/14295571

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The statement which describes what happens in the first step of the process shown in the image quiz above is:

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The correct answer choice is option b.

The complete image quiz is attached.

<h3>How light energy is absorbed in the first stage of photosynthetic nutrition.</h3>

From the image above, it is very clear that there is a capturing of light energy by the green pigment chlorophyll within the chloroplast, this results in production of energy ( glucose ). This process happens in the light reaction stage or light dependent stage of photosynthesis.

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Complete question:

Which sentence explain what happens in the first step of the process shown Quiz: cell nutrition and transport?

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b. Absorption of light energy by chlorophyll

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d. None of the above.

Read more on nutrition:

brainly.com/question/2044102

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4 0
1 year ago
ddt is stored in body fat and remains toxic for many years. explain why these characteristics are undesirable in a pesticide. wh
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So, in order to make a less harmful pesticide, one would need the features, which would make the pesticide to only influence the pests, and would also want it to function more promptly. A pesticide is less harmful if it monitors what one wants to control and does not affect other organisms in the surrounding.  

A less harmful pesticide would only monitor aphids, gypsy moths, or nuisance wasps, but would not kill honey bees, butterflies, praying mantis, or ladybugs. The pesticides, which would not remain in the environment are generally less harmful, in comparison to those that remain in the water, soil, or air for a longer duration.  


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Some beetles and flies have antler-like structures on their heads, much like male deer do. the existence of antlers in beetle, f
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