Two angles are complementary, the first angle measures 35 degrees. what's the measurement of the second angle?

Ascientific idea becomes valid when it is what?

Which statements explains what the fossil records indicates? check all that apply. a) earth is 4.5 billion years old b) many organisms have become extinct c) mammals have always existed on earth d) mass extinctions have occurred several times on earth e) the amount of water on earth has decreased over time?

This is due today and i dont know how to do this. i will give brainiest! research the critical new developments in telescopes, and telescopic lenses. write a 200 word paper on the new developments, describing how these effects the telescopes, and in what environments these work best.