What are some changes that can occur in ecosystems?

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel

What is any method of measuring the age of an object or event in years, such as using atomic half-life?

Why are carbon dioxide concentrations expected to increase? a carbon dioxide concentrations are expected to increase, because fossil fuel burning is expected to increase b. carbon dioxide concentrations are expected to increase, because of an increase in agriculture. c. carbon dioxide concentrations are expected to increase, because more land will have to be cleared for increasing populations and agricultural use. d. all of the above select the best answer from the choices provided mark this and return save and exit next submit submit