A single celled organism such as the amoeba used its cell membrane organelle to take in oxygen and remove carbon dioxide. Which organ system in humans has the same functions as the cell membrane of the amoeba A. Digestive
B. Nervous
C. Circulatory
D. Respiratory

oak trees? ? what was listed

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.

it would be rhyolitic hope this

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.