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A spill from a gasoline tank releases benzene, toluene, ethylene, and xylene (BTEX) and methyl-tertiary butyl ether (MTBE) into the subsurface. The spill travels through the vadose zone and into the saturated zone. The Kow of the BTEX compounds is higher than the Kowof MTBE. What is the significance of […]

Why is it that some people seem to have a ‘good’ immune system (i.e., they never get sick), whereas others seem to catch every illness that comes along? Given what you have learned so far, which components of the immune system do you think can differ between individuals?Why is it […]

1Which of the following is a colonial form of green algae?GiardiaThiobacillusVolvoxParamecium 2Land was first colonized about ______ years ago.100 million500 million570 million1.7 billion 3In angiosperms, the male gametophyte develops within ______.male conesmyceliafilamentsanthers 4Under what abiotic conditions can monomers spontaneously form polymers?When water evaporates from a hot surfaceWhen ribozymes are present […]

Question 1: What type of information is important for a territorial animal to learn before territorial establishment rather than after? Question 2: What is the difference between piloting, path integration and true navigation? Which one do you think is more helpful to a migrating animal? Question 3: How might migration […]