Ed Portal Ecology - composition living organisms Flashcards
1
Q
what is necessary for organisms to grow
A
orgs cannot create new mater, they must use elements found air, soil, water, and other organisms
2
Q
all living things are mainly composed of what elements?
A
Oxygen=60% Carbon=%20 Hydrogen 10% Nitrogen 3%
3
Q
what are macronutrients
A
elements required by all organisms in relatively large amounts
4
Q
examples of macronutients?
A
oxygen, carbon, hydrogen and nitrogen. Px2 Cx2 and Sx2 Phosphorus, Potassium Calcium, Chlorine Sodium Sulfur
5
Q
what are trace elements?
A
needed by organisms, but only in extremly small amounts. They make up less tenth of percent living matter
6
Q
examples of trace elements?
A
iron iodine Boron copper cobalt flurine manganese
