5) Jets and airplanes are made of composite materials like fiberglass, but these materials, though lightweight, can be cracked and
punctured. Airplane manufacturers still rely on materials like aluminum because it is so
A)
dense.
B)
ductile.
0
malleable.
D)
soluble.

Draw the farm's ppf for corn and beef. draw a point that shows an inefficient combination of corn and beef. label ita. draw a point that shows an unattainable combination of corn and beef. label itb. draw a point that shows an efficient combination of corn and beef. label itc.

The variation among individuals, on which natural selection acts

What substance in the leaves gives them a green colour?