biology

diffusion: is the spreading of particles from a high concentration to a low concentration.

differentiation: the process that a cell becomes specilised.

tissue: is a group of a similar cells.

organs: group of similar tissues.

equation of photosynthesis; carbon dioxide+ water   (sunlight)----> oxygen + glucose

glucose usage: proteins, seeds, starch, respiration and cell walls.

reasons distribution of animals: tempreture, water, sunlight, nutrients, oxygen and carbon dioxide.