What supports the theory that the universe is expanding?
a: parallax
b: light-year
c: main sequence
d: h-r diagram
e: red shift
f: fusion
g: elliptical galaxy
h: barred spiral galaxy
j: irregular galaxy
k: milky way galaxy

Competition occurs between species when

Which mechanism of transport takes place when solute particles move from a region of high concentration to a region of low concentration? active diffusion isotonic osmosis

Which is a genetic engineering advancement directly related to a career in biotechnology? 1) improving solar energy collection 2) transporting textiles at higher rates 3)creating crop foods that resist insect pests 4)repairing historical sites with quality materials