Is active transport related to diffusion?

The transport tubes from food came down the plant are called?

How far away is the nearest black hole from earth?

Which statements explains what the fossil records indicates? check all that apply. a) earth is 4.5 billion years old b) many organisms have become extinct c) mammals have always existed on earth d) mass extinctions have occurred several times on earth e) the amount of water on earth has decreased over time?