Scientists today can use many investigative methods to study evolution. Which method was developed after Darwin’s time? A. DNA comparisons
B. observations
C. comparison of fossils
D. experimentation

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -

Match each type of short-term climate change with its definition

Pluto was once classified as a planet. however, scientists no longer classify pluto as a planet. which is a likely reason for this change? the original hypothesis about pluto was supported. no observations of pluto were made in the past. several planets in outer space were found to be similar to pluto. there were significant changes in scientific knowledge about planets.