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Ne4ueva [31]
3 years ago
10

In the 1990s, many scientists agreed that the five-kingdom classification scheme should be expanded to six kingdoms. Which disco

very supported this decision?
Biology
1 answer:
Leto [7]3 years ago
7 0

the use of microscope because it led to the discovery of new organism and identification differences in cells

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How does the cell wall contributes towards maintaining homeostasis in the cell​
erma4kov [3.2K]

Answer:

The water wants to flow from the higher concentration, which is outside of the cell, to the lower concentration, which is inside of the cell. The cell membrane helps to regulate and slow down the flow of water into the cell. This is yet another way that the cell membrane helps maintain homeostasis.

I hope it helps ❤️

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4 years ago
What refrigerant safety group classification has the highest flammability and the highest toxicity?
timama [110]

Answer;

-B3

Explanation;

Refrigerants are divided into two groups according to toxicity:

-Class A signifies refrigerants for which toxicity has not been identified at concentrations less than or  equal to 400 ppm;  and

-Class B signifies refrigerants for which there is evidence of toxicity at concentrations below 400 ppm.

They are also divided into three groups according to flammability:

-Class 1 indicates refrigerants that do not show flame propagation when tested in air at 21°C and 101  kPa;

-Class 2 indicates refrigerants having a lower flammability limit of more than 0.10 kg/m3  at 21°C and  101 kPa and a heat of combustion of less than 19 kJ/kg;

-Class 3 indicates refrigerants that are highly flammable as defined by a lower flammability limit of less  than or equal to 0.10 kg/m3  at 21°C and 101 kPa or a heat of combustion greater than or equal to 19  kJ/kg.

-Therefore; the answer for the above question would be Class B and class 3.

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3 years ago
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How your biology class could be considered a system
kirza4 [7]

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Hope this is helpful to you...

Thank you!

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Only plant cells, not animal cells, have chloroplasts. What important process takes place in the chloroplast?
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Chloroplasts allow plants to capture the energy of the Sun in energy molecules. This gives energy and nutrients to the plant.

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