Choose all the answers that apply. Which of the following is true about the sun's radiation?

40 percent is reflected by the atmosphere.
It is long-wave.
60 percent reaches Earth's surface.
It is short-wave.
None of the rays are harmful.

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits

If there are 350 trout found in 200 square feet of a pond measuring 1000 square feet what is the estimated trout population of the pond? a. 1350 b. 1550 c. 1750 d. 2000

What class of levers is shown in this image?