Global warming is having a great effect on hundreds of species around the world. No one knows 61 (exact) what will happen in the future 62 global warming continues. As the Earth becomes 63 (warm), weather will become more unpredictable. Increased temperatures will cause the polar ice to melt, raising sea level and 64 (result) in more floods. The sea level 65 (rise) six to eight inches in the past 100 years. Hurricanes will be more 66 (power) and animals 67 require colder climates will be forced to move to other areas or will become 68 (endanger).
So far, efforts 69 (cut) emissions of greenhouse gases have been made and there are many things we can do. For example, use less energy 70 turning off lights, TVs, computers and other appliances when they are not used.
61. exactly 62. if/when 63. warmer 64. resulting 65. has risen
66. powerful 67. that/ which 68. endangered 69. to cut 70. by