Being timed ya girl out ! select the word from the list that best fits the definition supports the theory that the universe is expanding

answer choices;
parallax
light-year
main sequence
h-r diagram
red shift
fusion
elliptical galaxy
barred spiral galaxy
irregular galaxy
milky way galaxy

Which sentence best expresses the differing opinions of these two book reviews?

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

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 !