Questions and Answers
Which of the following is an example of an inorganic substance that is essential to the health and growth of humans and other living things?
Calcium
Which of the following is a form of organic matter synthesized by plants and animals?
Proteins
Which of the following processes describes the introduction of chemicals to the environment or the change in their concentrations?
Dilution in streams
How do living things uptake materials?
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Which of the following is evidence that some materials are difficult for organisms to obtain?
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Which of the following substances is known to enhance plant growth but can limit growth if too little or too much is available?
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Which of the following is an example of an inorganic substance that is essential to the health and growth of humans and other living things?
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Which of the following processes describes the dilution of chemicals in streams?
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Which of the following substances is difficult for organisms to obtain?
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Which of the following describes the uptake of materials by living things through absorption?
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