Why are plants so important to ecosystems?

describe an ecosystem and identify the different trophic levels.

describe what happens to energy as it is transferred through an ecosystem.

explain what happens in the carbon cycle, giving specific examples of some of the steps.

compare and contrast photosynthesis and cellular respiration.

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form