I think all of them are,polar bears have fur, penguins are suited for water and land, etc
Different types of blood contact different kinds of antigens and antibodies. For example, Type A blood has A antigens and B antibodies, antibodies being the thing that fights B antigens. Type B blood has B antigens and A antibodies. So if someone with type B gets transfused with Type A blood, the person's antibodies will attack the new blood.
Answer: Cells are the basic building blocks of all living things. Cells form structures to create tissue that makes up our bodies, plants, and animals.
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