Q: Scientists dig in a dry area at the bottom of a mountain range. Fossilized shells of freshwater mussels are found in the area. Which is a likely conclusion that scientists will draw based on this evidence?
A: Rivers once flowed through the area.
Q: A student completes several tasks while making breakfast. During which task does the student make a solution?
A: adding sugar to tea
Q: Scientists compared Pluto with other objects in the solar system and found that Pluto is smaller than Earth's moon. This finding caused scientists to question whether Pluto is a planet because
A: the other planets are much larger than Pluto
Q: What statement describes what happens to the carbon dioxide waste produced by a developing baby during pregnancy?
A:
It is carried by the umbilical cord to the placenta and then to the mother's blood.