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Savatey [412]
4 years ago
6

Data samples in which you expect no change to occur are_____.

Biology
1 answer:
mina [271]4 years ago
5 0
The answer is negative controls. These are groups where no phenomenon is probable. They ensure that there is no effect when there should be no effect. Where there are only two possible outcomes, e.g. positive or negative, if the treatment group and the negative control both produce a negative result, it can be concluded that the treatment had no effect. If the negative control group and the treatment group both yield a positive result, it can be inferred that a puzzling variable is involved in the occurrence under study, and the positive results are not only due to the treatment. In other examples, outcomes might be measured as lengths, times, percentages, and so forth.
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Which of the following statements about weather along mountain ranges is correct?
geniusboy [140]

Answer:

B

Explanation:

The windward position on a mountain is the side that is bombarded with prevailing winds. These winds are forced upwards into the upper cooler atmosphere by the physical barrier of the mountain. The moisture in the winds condenses forming clouds that precipitate as rain. As the winds descend on the other side of the mountain (leeward side), they have little moisture left. Therefore, the windward side will be rich in vegetation and biodiversity  due to higher annual rainfall than the leeward side.  

5 0
3 years ago
Read 2 more answers
See the attached image, please!<br> 16 points!
Mars2501 [29]

Answer:

Explanation:

From what I can see I think......

16) True

17) False

7 0
3 years ago
A plastic bottle contains 32.5 L of gas at a pressure of 45.7 kPa and
Monica [59]

Answer:

Final pressure, P2 = 362.26 kPa

Explanation:

Given the following data;

Initial volume = 32.5 Liters

Initial pressure = 45.7 kPa

Final volume = 4.1 Liters

To find the final pressure, we would use Boyle's law;

Boyles states that when the temperature of an ideal gas is kept constant, the pressure of the gas is inversely proportional to the volume occupied by the gas.

Mathematically, Boyles law is given by;

PV = K

P_{1}V_{1} = P_{2}V_{2}

Substituting into the equation, we have;

45.7 * 32.5 = P_{2} * 4.1

1485.25 = 4.1P_{2}

P_{2} = \frac {1485.25}{4.1}

P_{2} = 362.26

Final pressure, P2 = 362.26 kPa

5 0
3 years ago
Which picture should I use for supporting that my hypothesis was not supported? And please make a good explanation of the pictur
yanalaym [24]

Answer:

You should probably use the third picture to support that your hypothesis was incorrect.

Explanation:

I do not know what your project was, but it seems as though you were able to gather that the state of matter is liquid throughout the experiemnt using the last picture. If your hypothesis was that the state of matter would change, then the third picture would show that this is wrong, as it remains in a liquid state.

4 0
3 years ago
Human blood may contain either or both of two antigens, a and
Molodets [167]
Type O is the remainder after subtracting types A, B and AB.

so percentage of type O blood supply
= 100%-(28+15+10)%
= 100% - 53%
= 47%
6 0
3 years ago
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