biology b2 key words and definations
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.