When comparing lakes and oceans, most lakes have
a. lower levels of salt.
b. higher levels of salt.
c. inconsistent levels of salt.
d. about the same level of salt.

Ricardo notices that when he plays soccer in the rain, his ball does not seem to go as far after a kick. what is the best scientific question that ricardo could ask about this observation? is soccer better played in the rain or sun? how does rain affect the distance a soccer ball can travel? how does rain affect the speed of a soccer ball? is soccer affected by the rain?

How does the color of light affect the germination time (amount time a plant takes to develop) of a radish seed?

Which of the following molecules can be broken down into simple sugars? a. nucleic acid b. protein c. lipid d. carbohydrate