Think About It Describe what Thales might have discovered about weather that enabled him to predict a good olive crop.

Which type of electromagnetic waves are dangerous enough to be used to kill cancerous cells? (a)gamma rays (b)visible light (c)infrared light (d)microwaves

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?