Which of the following types of algae shows a distinct alternation of generations?
chlorophytes
phaeophytes
chrysophytes

Dna is colied into chromosomes in a cell

Which units ate used to measure both velocity and speed? check all that apply

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere