Use the terms core and mantle in a complete sentence?

How does the study of genetic disorders such as pku biologists understand normal alleles?

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

18. how do the cells in meiosis differ from the cells in mitosis?