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natta225 [31]
2 years ago
14

What is the main difference between the null and the research hypothesis? What is the importance of assuming the null hypothesis

is true?
Biology
1 answer:
Ksivusya [100]2 years ago
8 0

Answer:

The null hypothesis is a general statement that states that there

is no relationship between two phenomenons under

consideration or that there is no association between two groups.

A hypothesis, in general, is an assumption that is yet to be proved

with sufficient pieces of evidence.

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Why the energy of the product might be lower than the energy of the reactants
Amiraneli [1.4K]
A reaction in which heat energy<span> is absorbed is said to be endothermic. You </span>can<span> show this on simple </span>energy <span>diagrams. For an exothermic change: Notice that in an exothermic change, the </span>products<span> have a </span>lower energy than<span> the </span>reactants<span>.</span>
3 0
3 years ago
Read 2 more answers
Analyzing the following tree, prove the relationship between ray-finned fish and crocodiles using the characteristics given belo
7nadin3 [17]

Answer:

The Ray- Finned Fish has a bony skeleton just like crocodiles. Crocodiles evolved more and adapted to their environment. Along the way Crocodiles grew to have four limbs, were born from an amniotic egg, and then their eggs also have shells, unlike the Ray-finned fish. Therefore the three characteristics they do NOT have in common are: Four Limbs, Amniotic Egg, and Eggs with Shells. The one trait they do have in common is Bony Skeletons. They also both have vertebrae.

7 0
3 years ago
Increasing the alveolar ventilation rate will Group of answer choices increase the partial pressure of oxygen in the alveoli. de
Pie

Answer:

Increasing the alveolar ventilation rate will increase the partial pressure of oxygen in the alveoli.

Explanation:

Alveolar Ventilation rate is the rate of air flow in the alveoli of the lung during normal breathing. It is measured in milliliters of air per minute (mL/min). The alveolar ventilation rate is an important factor in determining the concentrations (partial pressures) of oxygen and carbon dioxide in the functioning alveoli.

A high rate of alveolar ventilation, would result in a rapid influx of oxygen-rich air and efflux carbon dioxide-filled air from the alveoli.  This ultimately results in an increase in the concentration of oxygen and a decrease in the concentration of carbon dioxide within the alveoli.

Effects of alveolar ventilation on partial pressures of alveolar carbon dioxide and oxygen (PACO₂ and PAO₂)

If the  alveolar ventilation rate is increased (and carbon dioxide production is unchanged), then the partial pressure of carbon dioxide in the alveoli, PACO₂ will decrease.

If the  alveolar ventilation rate increases, then the partial pressure of oxygen in the alveoli, PAO₂ will increase.

7 0
3 years ago
Match each decimal number to its equivalent in scientific notation.
sdas [7]
<h3>Answer</h3>

15 = 1.5 × 10^1

1.5 =1.5 × 10^0

0.015 = 1.5 × 10^-2

0.15 = 1.5 × 10^-1

150 = 1.5 × 10^2

<h3>How to convert to scientific notation</h3>
  1. Move the decimal point in your number until there is only one non-zero digit to the left of the decimal point. Let says it is X
  2. Count how many places you moved the decimal point. Let say it is Y.
  3. If you moved the decimal to the left b is positive.
  4. If you moved the decimal to the right b is negative.
  5. If you did not need to move the decimal b = 0.
  6. Write your scientific notation number as X x 10^Y.
4 0
3 years ago
True or false? nucleotides can be broken apart from a single strand of rna by hydrolysis reactions.
Tomtit [17]
The statement above is TRUE.
RNA hydrolysis is a reaction in which a phosphodiester bond in the sugar phosphate backbone of RNA is broken, thus cleaving the RNA molecule.
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8 0
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