A semipermeable membrane is a type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by diffusion—or occasionally by more specialized processes of facilitated diffusion, passive transport or active transport.
Answer:
An element is a material that consists of a single type of atom. Each atom type contains the same number of protons. Chemical bonds link elements together to form more complex molecules called compounds. A compound consists of two or more types of elements held together by covalent or ionic bonds.
Explanation:
Above
^
I
Answer:
What is the largest sediment that can be transported by a stream that has a velocity of 50 cm/sec?What is the largest sediment that can be transported by a stream that has a velocity of 50 cm/sec?
Sand is the only sediment that could be transported at that velocity as others are heavy to be transported with the mentioned velocity
Explanation:
Answer:
D. By diffusion across a capillary wall
Explanation:
D is the best answer because gas exchange takes place in our lungs. Our lungs have alveoli which have a network of tiny blood vessels called capillaries, here the O2 diffuses the capillary wall to enter the bloodstream, and similarly CO2 diffuses out and we exhale it our from our lungs.
I am guessing an Ecological Relationship as it is dependent on it's environment
