Hello!
Meiosis occurs in humans, animals, plants and fungi, and its a sexual type of reproduction. The daughter cells are different, cause the chromosomes are mixed. Mitosis is a asexual type of reproduction and the daughter cells are identical.
hugs!
When an ion or a molecule passes through a membrane without something facilitating, or encouraging that passage, such as a protein does. What drives it is the force of the diffusion itself instead.
If you mean connected as in how they all work together in efforts to keep their ecosystem stable then true. But if you mean in a connected in a common ancestor kind of way then false.