Which elements are the labels 1 and 3 most likely to represent? A. Nitrogen and phosphorus
B. Oxygen and hydrogen
C. Oxygen and sulfur
D. Hydrogen and helium

Which describes interactions between substances and stomata during photosynthesis? check all that apply. oxygen enters stomata. oxygen is released through stomata. carbon dioxide enters stomata. carbon dioxide is released through stomata. hydrogen enters stomata. hydrogen is released through stomata.

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

Why is permeable soil best for plants that need a lot of drainage?