Documents Reptiles and Birds

Reptiles and Birds Reptiles and Birds + Reptiles + Reptiles Body Plan Contrary to common belief, reptile scales can be smooth or rough, and they are never slimy. The basic…

Documents REMOVAL OF WASTES

YEAR 10 REMOVAL OF WASTES 1 Learning Objectives EXCRETION Recall the origin of CO2 and O2 as waste products of metabolism. Recall that the lungs, kidneys and skin are organs…