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(biology) The branch of biology dealing with the relationships of organisms with their environment and with each other.

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To settle a legal case or other dispute.

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wanting bad for someone

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(intransitive) To take away; to withdraw or remove.

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A substance used to kill insects.

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Extremely happy, peaceful, or picturesque.

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complicated, detailed, ornate

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Capable of making mistakes or being wrong.

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a device intended for inhaling

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The study of the digestive system, from mouth to anus.