According to the fossil record, approximately when did life first appear on earth? when did multicellular life appear? at what age is life thought to have moved from the oceans onto dry land?

Consider an organism that is eukaryotic, found in both unicellular and multicellular forms, may resemble a plant but is not photosynthetic, has chitin in its cell walls, and absorbs organic nutrients from decomposing material in the environment. this organism would be classified as which of the following types of organisms? a. fungib. protozoac. bacteriad. archaea

During the process of two rails or sides break apart and attract new nucleotide bases to form a new and complete strand.

Consider the following reaction: 2h2 + o2 —> 2h2o a) what are the reactants in this reaction? b) what are the products in this reaction? c) how many molecules of oxygen are used in this reaction?