Which of the following fossils is not found within the rock layers of the grand canyon? a. trilobites b. dinosaurs c. stromatolites d. armored fishes

How are organisms in the domain eukarya different from those in the domain archaea? o a. eukaryotes have a cell wall. o b. eukaryotes have mitochondria. o c. eukaryotes have more than one cell. o d. eukaryotes have dna. submit

Are the earth's ocean floor and continents the same age geologically? why or why not?

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