The Carbon Cycle

What is the law of conservation of mass?

• Mass can neither be created nor destroyed only transformed into something new.

• Mass can be created but not destroyed

• Mass cannot be created but can be destroyed

• Mass can be created and can be destroyed

Which is an example that demonstrates that living systems follow the law of conservation of mass?

• Most plants and animals begin their life cycle with a smaller mass and gain mass during development.

• The mass of an organism never changes over its lifetime

• When an organism dies its total mass is released into the environment

• Organisms do not use energy

In a balanced equation the amount of reactants always equal the amount of the products. This is an example of what?

• Law of conservation of energy

• Law of conservation of mass

• Law of conservation of organisms

• Law of conservation of science

All animals including humans need what gas from the air to survive?

• carbon dioxide

• methane

• oxygen

• helium

What gas do all animals including humans exhale therefore adding to the atmosphere?

• carbon dioxide

• methane

• oxygen

• helium

Which of these is the chemical equation for cellular respiration?

• oxygen + glucose (carbohydrates) ---> carbon dioxide + water

• oxygen + glucose (carbohydrates) ----> carbon dioxide + sunlight

• carbon dioxide + water ----> oxygen + glucose (carbohydrates)

• carbon dioxide + sunlight -----> sunlight + carbon dioxide

The process of plants using sunlight and carbon dioxide to make sugar (glucose) is called ......

• cellular respiration

• transpiration

• evaportation

• photosynthesis

The process of animals using glucose for energy and giving off carbon dioxide is called .....

• photosynthesis

• transpiration

• cellular respiration

• evaporation

The law of conservation of energy states that....

• energy can neither be created nor destroyed

• energy can be created but not destroyed

• energy cannot be created but can be destroyed

• energy can be created and can be destroyed

An example of the law of conservation of energy would be...

• Decomposers transfer energy from dead organisms to created new biomass for as food for other organisms

• The energy of an ecosystem is always the same

• An ecosystem starts out with little mass and more mass is created later on

• Organisms start out with a lot of energy and some is destroyed later on