(50 POINTS, GIVING BRAINLIEST TO CORRECT ANSWER) In the economics of natural resources, what is the definition of supply?

the discovery of a natural resource
the distribution of a natural resource
the amount of a natural resource desired
the amount of a natural resource available

Why do we perceive objects as retaining their brightness under different lighting levels?

Give examples of selective advantage of organism’s body part/organ

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.