What type of mutation results when bases are added to a gene

a. frameshift

b. nondisjunction

c. silent

d. missense

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?

Pulmonary arteries carry highly oxygenated blood. true or false?

Aragonite shells of clams, snails, or scleractinian corals may be preserved unaltered in cenozoic deposits, but they are generally dissolved or recrystallized in older deposits. true or false