Gas Exchange Equilibrium 2:1

Question 1

Direct effects increasing UVR have on animals?

Answer 1

• causes developmental damage in amphibians
• kills fish and amphibians
• reduces immunity to diseases
• causes deterioration of the skin (cancers)

Question 2

Indirect effects might increasing UVR have on animals?

Answer 2

• changes in behaviour
• wearing protective clothes
• wearing sunscreen
• selection for efficient DNA repair processess
• an increased survival of aquatic animals where dissolved material acts as a shield
• selection for darker pigmentation

Question 3

Anoxic

Answer 3

lacking free-flowing o2