Underneath its white fur, a polar bear has black skin. Discuss how these colours affect the overall amount of thermal energy lost by the
polar bear’s body

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Aman tries to push a box of mass 4 kg with a force of 5 n but the box remains stationary if the coefficient of static friction is 0.45, what is the value of the maximum force of friction?

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.