I know some people who never have any difficulties to speak of. The moment I understood your premisses, I felt sure you had a real foundation to hold on. Asa Gray difficultyfeltfoundation Change image and share on social
Many years ago it was taught that plants and animals were composed of different materials: plants, of a chemical substance of three elements,- carbon, hydrogen, and oxygen; animals of one of four elements, nitrogen being added to the other three. Asa Gray addagoanimal share on social
