Answer:
A substance that cannot be broken down into chemically simpler components is an element.
A substance that can be broken down into chemically simpler components (because it has more than 1 element) is a compound. Example: Water id a compound composed of elements hydrogen and oxygen.
Answer:
Sometimes, molecules cannot move through the cell membrane on their own. These molecules need special transport proteins to help them move across the membrane, a process known as facilitative diffusion. ... Many channel proteins allow the diffusion of ions. Ions are charged atoms.
Explanation:
Nectar is filled with all kinds of good nutrients that benefit the bees. Butterflies. Hummingbirds and other animals.
Answer:
The differences in characteristics between individuals of the same species is called variation . Some variation is passed on from parents to offspring, via genes during reproduction. ... Some variation is the result of differences in the surroundings, or what an individual does. This is called environmental variation.
