EARTHWORM

• WHY DO EARTHWORMS REQUIRE A DIFFERENT TYPE OF HAEMOGLOBIN?

  spend a lot of time underground, which has a low partial pressure of oxygen
• WHAT ADAPTION DOES AN EARTHWORM'S HAEMOGLOBIN HAVE?

  very high affinity for oxygen
• WHAT DOES THE ADAPTION OF AN EARTHWORM'S HAEMOGLOBIN MEAN?

  can load up with any oxygen is available