Answer:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
The answer is a geyser on apex
There are many steps in designing and conducting a scientific experiment, but the main ones are a hypothesis, trials, step/procedures, and a conclusion/review
Predators in the environment
The answer is transfer RNA or tRNA.
