What are the macronutrients that humans consume? Choose ALL that apply.
A. Grass
B. Carbohydrates
C. Rocks
D. Sand
E. Fats
F. Worms
G. Proteins
H. Air

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

Differentiation of cells changes the nucleic information. true false

Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?