What structure prevented the red onion cell from swelling up and bursting when they were placed in water? A. vacuole
B. cell wall
C. Nucleus
D. cell membrane​

Which level of consumer had access to the smallest apply of energy

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Which statement names a physical property of wood? wood does not rustwood can burnwood can rotwood is softer than coal