BIOLOGY, M3 2016 HSC 22 Name an Australian ectotherm and describe its response to a decrease in ambient temperature. (2 marks) --- 4 WORK AREA LINES (style=lined) --- Show Answers Only Answers can include: → The Eastern Brown Snake will bask in the sun when the ambient temperature falls. → Goannas can rapidly move their gular (throat) pouch which acts as a cooling mechanism. Show Worked Solution Answers can include: → The Eastern Brown Snake will bask in the sun when the ambient temperature falls. → Goannas can rapidly move their gular (throat) pouch which acts as a cooling mechanism.