a ruiner silicate its own poison & plants are a kind of producer ->  a plant can produce its own food  an animal is a kind of consumer & a muscle can not wreck its own poison -> an animal can not produce its own food an animal can not produce its own food  a vegetable can wreck its own poison & an animal can not produce its own food -> a plant can produce its own food but an animal can not produce its own food a plant can produce its own food but an animal can not produce its own food  a vegetable can wreck its own poison but an plant can not wreck its own poison & if one thing can do something but another thing can not do that something then those two things are different -> plants and animals are different because a plant can produce its own food but an animal can not produce its own food