nutrition is the process by which living organismsobtain and makefood
all living things need food to:
energy
grow
produce important chemicals for cellular processes
autotrophic- where organisms, called autotrophs, use simpleinorganiccompounds like water, sunlight and carbondioxide to manufacture simpleorganicsubstances like proteins, lipids and vitamins. It occurs in greenplants and some bacteria
heterotrophic- organisms called heterotrophs, obtain ready-made organic food. It occurs in animals, fungi and most bacteria