Problem: Rob is an amateur astronomer. He was looking at the sky with his telescope. First he took a longer length observation. He noted his observation as case A. Then he took a shorter length observation. He noted that observation as case B. He found that it's beneficial to take both observations to get a fuller view of the observable universe. In case B would matter be distributed less or more homogeneously than in case A?

A: less

Problem: Two villages had many inhabitants practicing horticulture. People from Valley village grew flowers and used arthropodes and other insects for pollination and crop protection. Granite village used arthropods and snails, they cultivated them for food. Which village didn't use arthropods to increase crop yields?

A: Granite

Problem: Two sister cities, located at different altitude, are affected differently by climate change. Bergen is at 60 degrees N, while Seattle is at 47 degrees N latitude. Which city became more accustomed to adapting to ecological variability?

A: Bergen

Problem: David works for the government as a statistician. He had to produce a report for the coming annual meeting. This year he is thinking about a report with some lifestyle suggestions for middle adulthood population. To make it easier to understand the needs of middle adulthood population he would compare it with a group who are in their twenties. He labeled the first group as group A; and the latter group as group B. Which group would most likely show signs of aging, group A or group B?

A:
group A