ecology - environmental change

Question 1

environmental changes:
temperature on animals (geographical change)

Answer 1

bigger ears = more surface area, so more heat loss, these animals will be found in hotter areas
smaller ears = less surface area so less heat loss. these animals found in cold places

Question 2

what is seasonal variation?

Answer 2

can affect population of species
example: animals can migrate to follow rainfall patterns, or warmer conditions

Question 3

what can human activity affect?

Answer 3

• affect levels of gases dissolved in water
• extremely sensitive to the gas sulfur dioxide which is produced by burning fossil fuels. can find them in areas of polluted air.