#1 ~ Nutrition: intake of food and water
#2 ~ Respiration turning and turning glucose into energy
#3 ~ Excrution: removal of waste
(#4 ~ Growth and/or development)
(#5 ~ Reproduction/death)
(#6 ~ Movement and/or responses)
(#7 ~ Homeostasis: the ability of an organism / cell to keep the internal conditions the same even though the external conditions change.)
