Focus groups should be comprised of how many people? Three to five people Six to eight people Eight to 12 people 10 to 12 people

3-5 people

Explanation:

It's called a focus group for a reason. If there were 8-12, or 10-12 people, the others might not be able to focus. But there are people who need others to focus, so 3-5 would be a perfect number per group.

hope it helps! :3

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'