which of the following statements is true?
A. animals use all the energy and material from the food they eat.
B. only some small animals can perform photosynthesis, but others must eat the food they need to survive and grow.
C. all animals are not able to perform photosynthesis, but they also eat additional food for survival and growth.
D. animals are not able to perform photosynthesis and instead must eat the food they need to survive and grow.
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which of the following is true about decomposers?
A. decomposers use photosynthesis to obtain energy in order to survive.
B. decomposers can herbivores, carnivores, or omnivores.
C. decomposers only exist in terrestrial ecosystems.
D. decomposers obtain energy and matter from waste and dead material.
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What types of ecosystems contain producers?
A. no ecosystems contain producers.
B. all ecosystems contain producers.
C only warm, aquatic ecosystems contain producers.
D. only warm, terrestrial ecosystems contain producers
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For which purpose would a visual model of food chain be most useful?
A. to see why photosynthesis occurs in plants.
B. to see the way humans affect the environment.
C. to see how organisms react to environmental changes.
D. to see the flow of matter and energy between organisms.