When a paramecium, a single-celled organism, is
living under stressful conditions, it sometimes
switches from asexual to sexual reproduction.
the main advantage when this switch occurs is
that the paramecium is most likely to
(1) produce fewer offspring
(2) increase variation among its offspring
(3) avoid having to find a mate
(4) produce clones of itself

What kind of seafood would you expect to have the highest levels of mercury and why? kelp, because they use the sun to photosynthesize on the bottom trophic level. oysters, because they filter feed on plankton on a lower trophic level. small fish, because they eat plankton on a higher trophic level. sharks, because they feed on organisms on a higher trophic level.

List two modern organisms that have pentameral symmetry

The chromosomal structure that limits the number of cell divisions of a cell is the the chromosomal structure that limits the number of cell divisions of a cell is the kinetochore telomere histones centromere