I’m gonna say whatever the other guy says
By carving symbols into walls of pyramids and/or caves
Answer: The correct answer is : cones
Explanation: At the bottom of the eye there are millions of cells like cones and rods that collect the different elements of the spectrum of sunlight and change them into electrical impulses that then send them to the brain through the optic nerves. The cones are concentrated near the retina. The cones are responsible for the color vision.
Answer:
Conduct a second survey
Explanation:
Mean age is the average age in a particular group of people. It is used in statistics to compare a group of people with another one.
The purpose of the mentioned survey was to compare the level of relationship satisfaction between married and non-married couples. For the survey to be valid, the average (mean) age in these two groups should be the same. People behave differently at different stages in their lives, some may be satisfied with their relationship at 23 and dissatisfied at 30. The age gap between the two groups here is to great to reach any plausible conclusions. You should conduct a second survey with the same or similar age groups.
