Trees grow more quickly in the than the , and the tree rings show up as colored bands. summer, winter, darker
summer, winter, lighter
winter, summer, lighter
winter, summer, darker

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. the following chemical equation shows the combustion of ethane. balance the equation by filling in the coefficients. c2h6 + o2 → co2 + h2o

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Suppose you could go back in time to interview henri becquerel on the day he discovered radioactivity. from his perspective, write an account of the discovery.