cold temperatures usually have a negative impact on organisms & temperature is a property of an environment ->  cold temperatures are a property of an environment that have a negative impact on organisms  cold temperatures are a property of an environment that have a negative impact on organisms & if the properties of an environment have a negative impact on organisms then that environment will contain few organisms ->  cold environments contain few organisms  ice is cold in temperature & a glacier is made of ice ->  a glacier is cold in temperature  a body of water is a kind of environment & a glacier is a kind of body of water ->  a glacier is a kind of environment  cold environments contain few organisms & a glacier is cold in temperature & a glacier is a kind of environment -> a glacier contains few organisms