A scientist sets up an experiment to see how colored lights affect the height of plant growth. He grows one group of plants in full sunlight, one group under red lights, one group under blue lights, and one group under green lights. All the plants are exactly that same type and all receive an equal intensity (brightness) of light. At the end of the experiment he measures all the plants. What is the dependent variable?
A) The intensity of the light
B) The color of the light
C) The height of the plant
D) Sunlight

Answer:

 fever, cough and shortness of breath. In more severe cases, infection can cause pneumonia, severe acute respiratory syndrome and sometimes death.

Answer: c

Explanation: 3.0 is 1,000 times as many ions

The statement that best describes the difference is ; The substance with the lower pH has 1000 times as many hydrogen ions per volume of water. ( D )

Given that the substance have pH ; 3 and 6

To prove the statement above we will make use of the pH formula

pH =  -log(H⁺)

for substance with pH = 3

3 = - log(H⁺)

H⁺ ( hydrogen ions ) = 10⁻³

for substance with pH = 6

6 = - log(H⁺)

H⁺ ( hydrogen ions ) = 10⁻⁶

Hence we can state that the substance with the lower pH has 1000 times as many hydrogen ions per volume of water

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Answer:

How is anyone supposed to answer that when there’s no pictures to match so we can answer it

Explanation:

Answer:

bag, human beings and bridge

Answer: if new investigations occur, new questions would have to be asked to find out the things that are being researched.

Explanation:

Answer:

B

Explanation:

The circulatory system is a network consisting of blood, blood vessels, and the heart. This network supplies tissues in the body with oxygen and other nutrients, transports hormones, and removes unnecessary waste products.

Answer:

The circulatory system work at tissue level by following points

=nutrients are delivered throughout the body

Answer:

Explanation: No they are not.

The following formula is useful to determine the size of the cell ⇒ Size of the object = FOV / Fit number = dFOV / Fit number. If you have this data, you can estimate the size of the onion cell. According to the values we used, the estimated size of this onion cell is 112 μm.

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Cells are too small to measure their sizes, so to know their actual size, we can make mathematical estimations to know their sizes, or we can use software programs. In this case, we are estimating their size using the following formula,

Size of the object = FOV / Fit number = dFOV / Fit number

To answer this question, we will replace the terms in the given formula.

→ First, we will get the FOV value. From references, we can assume that

You can also calculate the FOV by using a millimeter paper or rule.

Note: We will use these values to replace terms in the formula, but you can use the dFOV value calculated in question no. 3.

→ Second, we will count the number of cells that fit the field. We can see about four cells across the field of view.

→ Finally, we will replace the terms in the formula.

Size of the object = FOV / Fit number

Size of the object = 0.45 mm / 4

Size of the object = 0.112 mm

Since we generally use μm when referring to cell sizes, we need to multiply 0.112 x 1000 to get the size of the cell expressed in μm.

Size of the cell (μm) = 0.112 mm x 1000 = 112 μm

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