During the action phase, players may use the standard actions printed on their player boards. Those actions are:

• Spend 8 plants to gain a forest VP and raise the oxygen one step.

• Spend 20 MC to gain a forest VP and raise the oxygen one step.

• Spend 8 heat to raise the temperature one step.

• Spend 14 MC to raise the temperature one step.

• Spend 15 MC to flip an ocean tile.

When a player flips an ocean tile, they immediately receive the reward shown on the back of the tile.