All categories

3 years ago

Scientists often repeat experiments multiple times. Why is this important

2 answers:

7 0

So that they can see if the results are the same, and so that they can ask questions about the experiment and point out problems. Although some variation in results is acceptable, the results from different scientists should be similar- if the results are not similar and consistent then the experiment must be done again.

erastovalidia [21]3 years ago

5 0

You need a variable. If something happens once it could just be chance. Like if you got a lottery ticket and won, it would just be chance. Not the thing that happens the most.

You might be interested in

B. ENVIRONMENTAL DEGRADATION Define environmental degradation (2x1-2)

Volgvan

Answer:

Environmental degradation is a process through which the natural environment is compromised in some way, reducing biological diversity and the general health of the environment. This process can be entirely natural in origin, or it can be accelerated or caused by human activities.

3 0

3 years ago

Late afternoon or early evening naps can increase your chances of getting a good night’s sleep.

Alja [10]

B. False. Taking these naps actually decrease your chance of getting a good night’s sleep.

3 0

4 years ago

Read 2 more answers

If the number of employed persons in a country equals 24 million, the number of unemployed persons equals 8 million, and the num

Alinara [238K]

Answer:

B. 25%

Explanation:

Given that

employed persons = 24 million

unemployed persons = 8 million

Population over 16 age = 40 million

The total number of the labor force = unemployed persons + employed persons

The total number of the labor force = 24 + 8 = 32 million

$Unemployed\ rate = \dfrac{unemployed\ population}{ labor force}\times 100$

$Unemployed\ rate = \dfrac{8}{32}\times 100$

Unemployed rate = 25 %

Therefore the answer is B.

B. 25%

4 0

3 years ago

What does recent research suggest is a mechanism by which elevated levels of stress hormones may lead to mood disorders

tigry1 [53]

Answer: They inhibit the development of new neurons in the hippocampus.

Explanation:

Elevated levels of stress hormones may lead to mood disorders when there is a development of new neurons in the hippocampus. The hippocampus is a section of the brain structure which is deep into a temporal lobe. It's observed to get damaged easily by stimuli when affected by psychiatric disorders.

4 0

3 years ago

Many people believe that research has provided conclusive evidence that watching violent television or playing violent video gam

stira [4]

Answer: Correlation versus causation

Explanation:

Correlation is measuring the relationship between two variables, their size or direction, and causation is describing one event as a result of another event so it is showing us a relationship between two events. In this case, aggressive children would be a cause of watching and playing violet games, not games themselves.

3 0

3 years ago