We cannot answer questions from printed/copyrighted materials.
Respiration of mammals is aerobic.So O2 is essential for living.
Yes. Apes are mammals, and one of the defining characteristics of mammals is that they have hair.
If mermaids existed (which they don't) they would presumably be mammals. At least, most depictions of mermaids show them with obvious mammalian characteristics (specifically, obvious human characteristics; most mammals do not have large, permanent breasts).
birds
Bats are not birds because they are mammals as they have the characteristics of a mammal. They have these characteristics which enable them to be classified as mammals. They are warm blooded, and they have fur.
No, a tunicate is not a mammal. Tunicates are marine invertebrates belonging to the phylum Chordata, but they are not considered mammals because they lack typical mammalian characteristics such as fur, live birth, and mammary glands.
It is cardiovascular.
An order of mammals similar to bats.
not all mammals have five fingers and pose able thumbs and our hands are not harry
Whales ARE mammals. They have all the characteristics of mammals. Live birth, nurse their Young, Breathe with lungs, etc etc
they lack sovereignty
No. Despite sharing some characteristics mammals and birds are not closely related.