Which substance can enter a cell by diffusion without having to be digested? a. water b. protein c. starch d. fat?

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite

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