An employee stock purchase plan is a means by which employees of a corporation can purchase the corporation's stock at a discount. An employee stock option plan, on the other hand, allows an employee to either exercise or not exercise an option on a fixed amount of corporate stock at their own will.
 employee stock purchase plan employee stock optionemployee stock purchase plan 指員工可用低於市價的價格買到公司股票，employee stock option 指員工可對一個定量的公司股票執行選擇權，這兩種都是員工認股的種類。
這是一個連環問題: 燃燒石油導致二氧化碳增加，二氧化碳增加導致溫室效應，溫室效應導致冰層融化、海平面上升。 (請填空)
This is a chain of problems. Burning oil leads to increase in carbon dioxide, which leads to the greenhouse effect, which leads to melting of glaciers, which leads to rising se levels.