Answer:
One could be in the cell. The cell respires, thus producing carbon dioxide in it. So the concentration builds up in the cell. Diffusion is the net movement of particles from a region of high concentration to a region of low concentration, and the carbon dioxide concentration outside the cell is less, therefore the carbon dioxide molecules moves outs of the cell.
Another scenario is when perfume is sprayed into the air. The perfume particles collides with the air particles (lower or no concentration of perfume). This process goes on and on. This is diffusion since the concentration perfume particles collides with the less concentrated particles of perfume.
Answer:
astronomical unit (AU) and light years
Explanation:
Answer:
phototropism only happens after plants move from darkness into the light (false)
Answer:
Simple Organism
some simple organisms are made of single cell. Others are made of many cells that are similar
Complex organisms
in complex organisms, cells are organized into tissues, which make up organs. Organs form organ systems.
Explanation: im not sure if its correct but i hope it helps
Conservationists occasionally light forests on fire to control wild fires. By occasionally burning material (like leaves, branches, etc), those materials cannot build up and cause large and uncontrollable fires later.
