Ques:Mammals have a layer of fat under the skin to help insulate the body, and of the sea mammals, especially the seal and walrus are hunted. Given these facts, what has a layer of fat under the skin to help insulate the body among the following options: - walruses - bears - the Sun - water - rabbit - ice - animals - humans

Ans:walruses
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Ques:Bacteria in soil convert atmospheric nitrogen into a form usable by plants, and plants are the primary producers on earth. Given these facts, bacteria in the soil convert what type of gas into a form that is used by producers among the following options: - energy - burning - food - Energy. - nitrogen - nutrients - Cooking - a solute

Ans:nitrogen
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Ques:Adding salt to a liquid decreases the melting point of that liquid, and water is also a liquid. Given these facts, what decreases the melting point of water among the following options: - forces - Dilution - erosion - Heat energy - chilling water - heating water - reading books - adding salt

Ans:adding salt
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Ques:Stalactites are formed by deposition, and most stalactites are formed from drips of water. Given these facts, what are stalactites deposits of among the following options: - Calcium carbonate - Decayed matter - Sediment - Drips of water - Still water - detritus - calcite - Tourists

Ans:
Drips of water
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