The difference between mechanical and chemical weathering is
a. the length of time each takes to break up a rock
b. that only chemical weathering involves water
c. the way they affect the makeup of a rock
d. all of the above

Name the types of burns one can get and which structures of the integument are damaged

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird