What is true about scientific knowledge? a. it isn't based on observation b. it changes as new evidence is found c. it is agreed upon by all scientists d. it is rarely proven wrong. is it d?

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

Ture or false evidence for evolution includes millions of fossils

Isotopes of the same element have differ in their