How many molecules of dna would result from one molecule after four cycles of pcr
a.4
b.16
c.32
d.2

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

An organism has the following traits multicellular cant photosynthesize has a skull. wht kingdom does this organism most likely belong too?

Draw the farm's ppf for corn and beef. draw a point that shows an inefficient combination of corn and beef. label ita. draw a point that shows an unattainable combination of corn and beef. label itb. draw a point that shows an efficient combination of corn and beef. label itc.