This word uses a new kun'yomi reading for 生 and a new on'yomi reading for 地. You haven't learned either of these readings yet, sorry! Here's some mnemonics to help you:

If you want the best material to make clothes or pies out of, the key (き)is asking Jesus (じ)! He knows everything, including where to find the materials for whatever weird thing you're making. Just remember: Who's the key? Jesus!