Which type of country has the greatest proportion of young individuals?
economically developed
economically underdeveloped
countries with zero population growth
countries in europe

What is thought to have caused the mass extinction at the end of the cretaceous period?

Tara sees a commercial for a brand of pills that promise to boost energy and people perform better in work and school. as people in the commercial talk about how much better they feel when taking the pill, tara notices a message on the bottom of the screen that reads, "this pill is not approved by doctors and has not been tested in controlled experiments." what is the best conclusion that tara should make about the commercial? it is making scientific claims based on subjective observations. it is making scientific claims based on opinions instead of pseudoscientific facts. it is making pseudoscientific claims based on objective observations. it is making pseudoscientific claims based on opinions instead of scientific facts.

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above