Fossils may be:
(a)-from impressions left after an organism decays.
(b)-formed when organic matter is replaced by minerals, turning to stone.
(c)-formed when plant resin or tar preserve the specimen.
(d)-casts from footprints that have filled with mud and then turned to stone.
(e)-all of the answer choices are correct.

The dna in a cell’s nucleus encodes proteins that are eventually targeted to every membrane and compartment in the cell, as well as proteins that are targeted for secretion from the cell. for example, consider these two proteins: phosphofructokinase (pfk) is an enzyme that functions in the cytoplasm during glycolysis. insulin, a protein that regulates blood sugar levels, is secreted from specialized pancreatic cells. assume that you can track the cellular locations of these two proteins from the time that translation is complete until the proteins reach their final destinations.for each protein, identify its targeting pathway: the sequence of cellular locations in which the protein is found from when translation is complete until it reaches its final (functional) destination. (note that if an organelle is listed in a pathway, the location implied is inside the organelle, not in the membrane that surrounds the organelle.)

Creating new things to solve problems and improve life depends on the close interaction of which two fields?

This is the interaction of two organisms where one is and the other is neither nor harmed.