Using the cladogram, who is the closest relative to the bird ? - rabbit
- shark
- ray-finned fish
- crocodile

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

The mammal pictured below is a silvery mole rat. which statement is an inference based on the picture? the animal is ugly. the animal has hairless feet with sharp claws. the animal has prominent upper and lower incisor teeth. the animal likely has poor vision since its eyes are so small.