What is Darwins theory of the origin of species?
Darwin’s theory of species origination says that natural selection chooses organisms that possess variable and heritable traits and that are best suited for their environments. –Submitted by Jonathan Weiner, 1995 Pulitzer Prize-Winning Author 5. Why does a year consist of 365 days and a day of 24 hours? Answer: A year, 365 days, is the time it takes for the Earth to travel around the Sun. A day, 24 hours, is the time it takes for the Earth to spin around once on its axis. –Submitted by Leslie Sage, Nature Magazine 6. Why is the sky blue? Answer: Solar radiation sunlight is scattered across the atmosphere by a process called diffused sky radiation. The sky is blue because much more short-wave radiation–blue light–is scattered across the sky than long-wave radiation–red light. –Submitted by Roy Glauber, 2005 Nobel Prize Winner; Harvard University 7. What causes a rainbow? Answer: Rainbows can be seen when there are water droplets in the air and the sun is shining. Sunlight, which c
