Use the drop-down menus below to identify the organ that is responsible for each function of the excretory system.
produces feces
excretes sweat
converts poisonous substances to less toxic forms
excretes carbon dioxide and water
produces urine

What came first egg or chicken? and is tomato a vegetable or a fruit?

Flock x flock y flock z total pieces of food eaten (from previous page) 147 93 60 food percentage* % % % simulated number of birds in flock for 3rd generation** * divide each flock's total pieces of food by 300, the total number of pieces of food eaten. ** multiply the food percentage for each flock by the total number of birds (30).

How does a lytic infection differ from a lysogenic infection?