Ectotherms are more common in some ecosystems than in others. Where are ectotherms the LEAST common, and for what reason?
a. a very cold ecosystem, because they would lose too much body heat
b. a hot, dry ecosystem, because they would overheat without a steady supply of water
c. a hot, rainy ecosystem, because they depend on dry surfaces to maintain body temperature
d. an aquatic ecosystem, because they would lose too much heat to the water