During which eon did oxygen begin to build up the most in Earth’s atmosphere? a.)Phanerozoic b.)Proterozoic c.)Hadean d.)Archean

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

Which is a function performed by stem cells in the skin a. replacing lost skin cells b. making cells for the intestines c. growing new organs d. differentiating into brain cells plz apex

The same agricultural practices are used in every country of the world. select the best answer from the choices provided t f