How is human activity related to carbon dioxide concentrations in the atmosphere? a) burning fossil fuels decreases the concentration of carbon dioxide in the atmosphere. b) burning fossil fuels increases the concentration of carbon dioxide in the atmosphere. c) cutting down forests increases the concentration of carbon dioxide in the atmosphere. d) cutting down forests decreases the concentration of carbon dioxide in the atmosphere.

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 locations on the map are low-pressure areas? a b c d e

The picture shows a location in india that is very dry and arid. notice the tall mountains in the background; you can find high amounts of vegetation on the other side of the mountains. which statement is most likely true for this area?