The compound A2X is 38.6 % A by mass. What mass of the compound contains 56.7 g A?

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?