Select the correct answer. Which marine creatures show diurnal vertical migration?
A.
species of phytoplankton
B.
species of zooplankton
O c.
invertebrate nektons
OD
all species of plankton
E.
all species of nekton

In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

Which of the following types of pollution is most responsible for large numbers of deaths worldwide because of unsafe drinking water? (a) nutrient pollution (b) thermal pollution (c) pathogen pollution (d) sediment pollution

Everything in the universe originated from a single point. how was it possible for everything in the universe to have occupied a single point in space?