Differentiating star clusters
sort the descriptions of open clusters and globular clusters into the correct categories.
no more than a few thousand stars
open clusters
globular clusters
disorganized
tightly packed
more than a million stars
made of older stars
loose

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

What was the land like over 500 million years ago? what was under the sea?

Which of the following is a difference between active transport and facilitated diffusion? view available hint(s)which of the following is a difference between active transport and facilitated diffusion? facilitated diffusion can move solutes against a concentration gradient, and active transport cannot. active transport involves transport proteins, and facilitated diffusion does not. facilitated diffusion involves transport proteins, and active transport does not. active transport requires the expenditure of cellular energy, and facilitated diffusion does not.