What distinguishes bogs, marshes, and swamps from each other?
a. bogs are deeper than marshes and swamps, and swamps and marshes have acidic groundwater.
b. swamps are deeper and have a larger proportion of surface water than marshes, and bogs have acidic groundwater.
c. marshes have great biodiversity, while bogs and swamps have more water but less biodiversity.
d. bogs, marshes, and swamps are different names for wetlands based on location and not differing characteristics.

Ablastocyst is a group of cells that forms after a human egg is fertilized. the blastocyst consists of two types of cells. some of these cells will become the placenta. what do the other cells develop into?

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

Isotopes of the same element have differ in their