A scientist studies the effects that barnyard grass, a weed, has on the growth of rice other weeds, and insects. The barnyard grass and other weeds, rice, and insects make up which level of the biological organization? A.)All the insects in North America.
B.)All the white tailed deer on a island.
C.) All the Bacteria in a digestive tract
D.) All the single-celled creatures in a sample of pond water

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.

You are observing different types of cells in your science lab. one cell has many chloroplasts. what is the most likely function of this cell? a. energy production b. photosynthesis c. reproduction d. digestion

Which of the following is not a type of epithelial cell