A plant cell contains a large membrane bound, sac-like structure that stores materials such as water, salts, proteins, and carbohydrates. When this sac-like structure is full it makes the cell rigid, which enables a plant to stand up straight. This sac-like structure is most likely what organelle? A. nucleus
B. vacuole
C. chloroplast
D. mitochondrion

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d

What is the difference between a meteoroid and a meteor?

What two factors does carrying capacity compare? population size and resource use population growth and resource availability resource use and time population size and time