BIG HOG

The amount of matter in the Earth system remains constant over time. The forms and locations of the matter stored within the system, however, change continually as it cycles through the Earth. Matter can be transferred b...

Phytoplankton are single-celled, photosynthetic organisms living at the surface of the ocean. How do phytoplankton affect the Earth's carbon and oxygen cycles when they perform photosynthesis? A. They add oxygen to and r...

The diagram below represents part of the oxygen cycle. Which arrow, or series of arrows, represent the movement of atmospheric oxygen (O2) during photosynthesis? A. only arrows 1 and 6 B. only arrow 1 C. only arrow 6 D....

Select each correct answer. Examine the diagram of the carbon cycle shown above. Through which of the following processes is carbon returned to the atmosphere? respiration burning of fossil fuels decomposition of organic...

A diagram of the carbon-oxygen cycle is shown below. Which of these best describes the role of plants in the carbon-oxygen cycle? A. to absorb carbon dioxide from the atmosphere and release it back into the atmosphere B....

25 In the above food web, energy is transferred from wheat to the mouse and from the mouse to the coyote when these organisms are consumed. How does this example support the law of conservation of energy? A. Energy is bo...