The Importance of Carbon 100%

Which substance is considered a building block for all living things? hydrogen glucose carbon protein

carbon

What is the primary function of the carbon cycle? recycling the supply of carbon on Earth creating macromolecules recycling the supply of water on Earth creating fossil fuels

recycling the supply of carbon on Earth

Look at the levels of carbon dioxide in the data table below.Carbon in the AtmosphereBy how much did carbon dioxide levels increase from 1980 to 2000? 22 ppm 32 ppm 45 ppm 51 ppm

32 ppm

What would most likely happen to the carbon cycle if there were no more plants on Earth? Animals would consume more carbon. More carbon would be released from fossil fuels. Carbon would build up in the atmosphere. Animals would perform more photosynthesis.

Carbon would build up in the atmosphere.

The chemical formula for the major component of palm kernel oil is CH3(CH2)14CO2H. The chemical formula for the carbohydrate glucose is C6H12O6.Which statement best describes these macromolecules as foods? Glucose is a better energy source because it is the only one that can be broken down by living things. Palm kernel oil would provide a quicker energy source than glucose because it has more carbon atoms that can be used. Glucose is the only one that would provide energy to living things because it is a key product of respiration. Palm kernel oil would provide more energy than glucose because it contains more carbon bonds, which release energy when broken.

Palm kernel oil would provide more energy than glucose because it contains more carbon bonds, which release energy when broken.

The table below shows the level of carbon dioxide in the atmosphere for a period of 50 years.Carbon Dioxide LevelWhat conclusion can you make about how the carbon dioxide level has changed over time? The level has not changed. The level of CO2 has declined. The level of CO2 has risen. The level has reached its maximum.

The level of CO2 has risen.

How will the level of carbon in the atmosphere change if humans do nothing to reduce their impact on the carbon cycle? Carbon will be removed from the atmosphere altogether. The level of carbon in the atmosphere will decrease. Carbon in the atmosphere will remain the same. The level of carbon in the atmosphere will increase.

The level of carbon in the atmosphere will increase.

Which action would most likely increase the amount of carbon in the environment? choosing to burn coal to generate electricity using energy-efficient appliances in place of older, traditional appliances reusing shopping bags instead of using disposable plastic bags recycling paper and plastic instead of throwing it in the trash

choosing to burn coal to generate electricity

By which process are fossil fuels formed? burning photosynthesis decomposition cellular respiration

decomposition

Which pair of molecules both contain carbon atoms? fats and proteins water and carbohydrates nucleic acids and water oxygen gas and fats

fats and proteins