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Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the

20 the main source of energy for our planet comes from the

Support mangrove trees out of the water. a) pneumatophores b) prop roots c) sand dunes d) tide supports