A wave meets a large barrier that has a small opening in it. The part of the wave that meets the opening bends as it passes through. Which statement
best describes what has happened to the wave?
A. The wave diffracted as it passed through the opening in the
barrier.
B. The wave was reflected as it passed through the opening in the
barrier
C. The opening in the barrier absorbed all of the wave's energy.
D. The opening in the barrier caused the wave to change speed and
refract.

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

The peak wavelength for the blackbody curve of a star is in the uv range. assuming the radiation from this star can reach earth, would you be able to see it?

What is the percent by mass of oxygen in fe2o3