Look at the events in your Sorting Tool activity and at the Geologic Time Scale diagram from the article. In what period did the first fish appear?

Dermal tissue in plants stores 1.extra food 2.transports water and nutrients 3.transports waste materials 4.is similar to epithelial cells in animals

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c. ozone layer hole d. increase in sea levels

What is the similarities and differences between bacteria and eukaryote?