Who confirmed the three-dimensional structure of dna?
who first discovered dna and named it “nuclein.”?
what was the first photo of dna which scientists understand its structure?
who studied dna using special x-rays?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z