Which of the following is an example of selective permeability? a magnet
a window screen
a milk jug
a bottle rocket

What food can provide the body with a quick source of the energy needed to carry out cell functions (a) whole grain bread (b) ground hamburger (c) vegetable oil (d) whole milk

In a cladogram' when does a group of organisms branch off

How are gross production and net production different? a. net production is always greater than gross production. b. net production is always less than gross production. only animals have net production. d. only plants have net production. select the best answer from the choices provided