49. A test for starch in variegated leaves shows the importance of A. sunlight
C. water
B. oxygen
D. chlorophyll

The process by which natural forces move weathered rock and soil brim one place to another is called

Chalk is an ionic compound. which is a property of all ionic compounds that makes chalkboard? particularly useful for writing on a a high melting point hardness and brittleness inability to dissolve in water a multicolored appearance

Why is excretion necessary to maintain homeostasis?