This reformation leader nailed ninety-five reasons on the door of a church for his objections to some of the catholic church's teachings.
martin luther
john calvin
john knox
john wycliffe

Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite

People keep spending additional units of a particular resource on a want until their marginal benefit is  decreasing withgreater thanless thannot affected by  their marginal cost.

Can someone me? i need to have this done as soon as possible! i'm putting 20 points on this!