Questions with the keyword 'blood'
- Why are some animals warm-blooded and some cold-blooded? Does it affect their behaiour and limit what they can do? by rebeccam to Jo, Kevin, Valeria Comments: (So far, one comment )
- Do all animals have red blood cells??? by gracet and 2 others. to Charlotte, Jo, Kevin, Louise, Valeria Comments: (So far, one comment )
- do worms have hearts and do flies have blood? by anon-22441 and 1 other. to Charlotte, Jo, Kevin, Louise, Valeria Comments: (so far, 4s comments )