Members of Chondrichthyes differ from members of Osteichthyes by having (a) . jaw bony skeleton cartilaginous skeleton two sets of paired fins

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis