Limnetic, profundal, littoral, and benthic have what in common? a.
They refer to the upper-level zones found in salt- and freshwater ecosystems.
b.
They are all zones found in freshwater systems.
c.
They refer to the lower-level zones found in $alt- and freshwater ecosystems.
d.
They are all zones found in $alt water systems.

1. which of the following is correct regarding opiates/opioids: a. they all have a natural component as a starting pointb. they have low addiction possibilitiesc. methadone binds to some of the same receptorsd. a and care correcte. all are correct

The human genome project is devoted to mapping the general dna sequence of our species. this could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases. however, there are some ethical issues surrounding the mapping of individual genomes. one concern is a) that your genes may change over time, making the project useless. b) that insurance companies could discriminate based on genetic make-up. c) that since this has never been done before, we should probably not do it now. d) that sequencing our individual genomes is so expensive, it is a counter-productive strategy.

Organisms that successfully adapt will leave to grownone of the above