Answer:
I think the answer is C: An experiment that includes one group for which the scientist controls all variables
Explanation:
Answer:
(2) 988.5 mb.
Explanation:
The air pressure descends as we ascend. In other words, they are inversely proportional.
The air pressure descends as we ascend the mountain because the air molecules that are above us in high altitudes are fewer than the number of air molecules that are above us in the base of the mountain. So, the exerted pressure of the molecules on ourselves is lower in high altitudes.
Due to the reason mentioned above, we can deduce that the only correct option is option number two since the other ones show increasing or the same pressure, which is not possible as we ascend.
Answer:
B. The hurricane has caused a population bottleneck
Explanation:
When there is a sudden reduction in the size of a population due to some unfavorable environmental conditions, the population is said to have experienced bottleneck. Bottleneck mostly results in genetic drift and changes the allele frequencies in the population. It is caused by some natural disasters or adverse conditions such as a hurricane.
In the given example, the hurricane removed all the birds with green feathers from the population and also has reduced the population size from 1000 to 10. Therefore, it represents the population bottleneck.
You would most likely to find DNA molecules in humans, butterflies and trees because they are all living things.
Answer:
Option (c).
Explanation:
Correlation may be defined as the statistical relationship used to explain the relation between two things. Two types of correlation are positive correlation and negative correlation.
The college students with more money and new clothes will help to make new friends as money can be used for more party and fun. The wealthy students has direct relation with new friends as they have more money to spend and enjoy with new friends.
Thus, the correct answer is option (c).