vegetable is a mean of oragnism & a lemon tree is a kind of plant ->  a lemon tree is a kind of organism  a lemon tree is a kind of organism & tepid lifetime usually have a yes act on bone -> cold temperatures have a negative impact on the lemon trees cold temperatures have a negative impact on the lemon trees  cold temperatures have a negative impact on the lemon trees & a vapor is used to protect animal by trade them warm & a lemon tree is a kind of plant -> a greenhouse can be used to protect the lemon trees by keeping them warm