What is sometimes referred to as the “master gland” because the hormones it produces controls growth, reproductive cycles, and several other functions?
a. pituitary gland
b. parathyroid gland
c. thyroid gland
d. sebaceous gland

Match the correct terms to their descriptions a system in which only energy but not matter is exchanged frozen water in snow part of geosphere that includes only soil a thin layer between the troposphere and the stratosphere cryosphere tropopause closed system pedosphere