Answer:
<em>The correct option is C) happened by chance</em>
Explanation:
Mutations can be described as any changes which occur in the DNA of an organism. Mutations can be natural or induced through methods like the use of chemicals.
Mutations occur randomly and happen by chance. Hence, option C is correct.
Other options like option A are false because mutation is the sudden change in the genome of an organism. Hence, mutations will not cause the teeth to grow longer until they reach an optimal length.
Answer: 1
Explanation: It’s number 1 because it mostly defines how people think about their exercise more than eating healthy which is why when people work out they watch what they eat as well.
Answer:
Options <em>A, B and C</em> are correct.
Explanation:
A. Nutrition impacts memory when people are on the diet for three months
This option is correct because it was found that being on a high- protein or high-fiber diet for three months resulted in a significant improvement on memory performance tests. Note that "significant" here refers to statistical significance- which means the result is not due to random chance.
B. Nutrition has a bigger impact on memory when people are on the diet for three months than when they are on the diet for one month
This option is correct because when subjects were on a month long diet of either a standard diet, high- protein or high-fiber diet, it was found that memory performance is somewhat better for the high-protein and high-fiber groups than for the control group, but the effect of nutrition is not statistically significant. This means that the subjects on the high-protein and high-fiber groups did not conclusively do better on memory tests, and the result could be attributed to chance or other extraneous factors.
On the other hand, when subjects were on a high- protein or high-fiber diet for three months, it resulted in a significant improvement on memory performance tests- which means the result was not due to random chance.
C. There is not sufficient evidence to conclude that nutrition impacts memory when people are on the diet for one month
This option is correct because as stated above, it was found that memory performance is somewhat better for the high-protein and high-fiber groups than for the control group, but the effect of nutrition was not statistically significant- which means the results could be attributed to chance.
Girls: in between 8 and 13
Boys: in between 9 and 14
It doesn’t specify what gender I’d go with answer B
