What is an example of excretion in mammals?
1 )
the release of hormones from glands
2 )
the release of saliva into the mouth
3 )
the removal of undigested food through the anus
the removal of urea by the kidneys
تحلیل ویدئویی تست
تحلیل ویدئویی برای این تست ثبت نشده است!