According to scientific data on climate change, what levels have risen by 30% over the past 200 years?
a.
ozone
b.
argon
c.
carbon dioxide
d.
krypton

Ocean waves move up and down in circles, but transmit horizontally toward the shore.

Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.