The control group in an experiment is a standard of comparison for the experimental group.
What is a control group?
- A control group is a group in an experiment or study that does not include the independent variable but serves as a comparison for the treatments given to the main experiments.
- The control group serve as a determinant in an experiment as to ensure that our experiment will work.
Some examples of control groups are:
- Positive control group
- Negative control group
- Placebo control group
- Randomized control group
- Untreated control group
- Double-blind control group
- Historical control group
Read more about Control group here: brainly.com/question/21485161
Answer:
The Sun is completely blocked in a solar eclipse because the Moon passes between Earth and the Sun. Even though the Moon is much smaller than the Sun, because it is just the right distance away from Earth, the Moon can fully blocks the Sun’s light from Earth’s perspective. Sometimes the Moon is far enough away that it doesn't create a total solar eclipse. However, once the Moon's growing orbit takes it approximately 14,600 miles (23,500 km) farther away from Earth, it will always be too far away to completely cover the Sun. That won't happen for a long time though.
Explanation:
https://spaceplace.nasa.gov/total-solar-eclipse/en/
The word which doesn't belong in the glossary of a lesson on democracy in this case would be memorize.
Democracy, election, government all are words, on the other hand, which are important and should be mentioned when one's talking about democracy.
This is survival of the fittest. So because of the drought there was no more food supply for the long necked tortoises thus causing them to die off and not be able to reproduce and pass of their gene for long neck. Where as for the short neck tortoises there was enough food for them to survive and thus being able to reproduce and pass on their gene for the short necks.
Hope this helped
The Moro reflex, when infants thrust their arms outward after suddenly losing support to their head and neck, may have the function of protection from falling.
It might be a survival instinct to help the infant cling to its mother. The significance of the Moro reflex is in evaluating integration of the central nervous system (CNS).
