Human activities add carbon to Earth’s atmosphere at a rate of about 1,000 million metric tons per year. As part of the natural carbon cycle, land plants and the ocean remove about 55% of this extra carbon and about 45% stays in the atmosphere. Identify TWO Earth systems that are being affected by the extra carbon from human activities. Explain how each Earth system is being affected.

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?