Some scientific computer models predict that crop yields for corn and wheat, two food samples that provide for two thirds of the world's calorie consumption, will decline due to global warming. which of these is the least likely cause for crop production reduction as caused by climate change

What are the four basic classes of organic molecules how do they differ structurally and functionally

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?