Less hair makes cold easier to feel. Why didn’t that wipe humans out?
Show answer & explanation
Answer: Behavior helped compensate
Behavior helped compensate ✓ — Correct! Early humans could offset some of the cost through behavior and tools, using shade, fire, shelter, grouping, and better timing of activity.
Humans stopped feeling cold — Wrong. Humans still feel cold. The key is that behavior can reduce the cost of being less furry.
Skin made extra heat — Wrong. Skin helps regulate heat, but it is not a special new heat-making engine that replaced body hair.
More Evolution & Genetics questions
- Which of the following best describes a common change in RNA transcript length with age?
- Why do different organs in mammals show different gene activity patterns related to longevity?
- Two people can be the same age but show different RNA-module aging. What would a module clock show?
- Aging RNA signals grouped into modules, not one score. What does a module view reveal?
- Mouse, monkey and human cells show similar aging RNA shifts across tissues. What does that hint at?
- A platypus lays eggs but feeds hatchlings milk without nipples. What makes that less contradictory?