Some solar flares send out high-energy particles. Why are these particles not usually harmful to humans on Earth?
A. the Moon protects Earth
B. The oceans protect Earth
C. the atmosphere and magnetic field protect Earth
D. the auroras protect Earth

What is the 77 element on the periodtic table

The transport tubes from food came down the plant are called?

Select all the correct answers. which statements fail to meet the requirements of a scientific claim? a) in the final 100 meters of a 10,000-meter race, an athlete's speed is more strongly related to anaerobic efficiency than to aerobic efficiency. b) flowers that reflect the most ultraviolet light are more likely to attract bees and other pollinators than flowers that reflect less ultraviolet light. c) even though evidence indicates that the solar system's planets follow elliptical paths, copernicus's model involving circular orbits is true. d) the evidence supporting newton's laws of motion was accurate in newton's time, but the universe operates differently today.