It is important that classification principles be standardized in order for all scientists to follow the same set of rules. an example of this is a) the use of latin. b) the adherence to medieval categories. c) leaving viruses out of the modern taxonomic system. d) all living things are classified as either having blood or not having blood.

Solar energy causes water to evaporate into the atmosphere. how does that water vapor become a cloud? a) as the water vapor goes higher in the sky, the air gets cooler. the cooler air causes the water vapor to condense. b) as the water vapor goes higher in the sky, solar energy causes it to condense around particles of dust. c) as the water vapor goes higher in the sky, the air gets warmer and the water vapor begins to condense. d) as the water vapor goes high into the atmosphere it turns to ice and that's what forms clouds.