Answer:
dear user the answer is option A.oxygen level and water temperature and C.salinity and water temperature.
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Answer:
All mammals, like dogs, cats, and humans; reptiles, amphibians, fish, birds, and even insects.
Explanation:
All mammals, like dogs, cats, and humans; reptiles, amphibians, fish, birds, and even insects are the animals that have a complete tube-like gut with two openings. A system having a tube with two openings i.e. mouth and an anus is called tubular system. In this tubular system, the animals eat with one opening and the other opening is used for excretion of waste and nitrogenous materials from the body so that's why most of the animals have two openings.
Science can be used to address societal issues and to inform policies.
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Your blood vessels dilate which is called vasodilation, this allows your blood to carry out the excess heat from inside your body to the outside.
