Viruses are resistant to which of the following: all of the above, freezing, disinfectants, heat

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

feral cats are estimated to eat tens of millions of native animals each night in australia