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Which type of ecological system experiences no input or output of energy or material?
ecosystems do not experience any new input or output of energy and/or material.

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d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

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