Two researchers studied air quality over the North Pole, and over Antarctica. Dan was more fond of the south pole, so he studied Antarctica, while Colt liked reading about the North Pole. Which researcher learned less about higher levels of UV radiation reaching Earth? Hint: Unfortunately, the layer of good ozone is being destroyed by air pollution. The chief culprits are chlorine and bromine gases. They are released in aerosol sprays, coolants, and other products. Loss of ozone has created an ozone hole over Antarctica. Ozone depletion results in higher levels of UV radiation reaching Earth. In humans, this increases skin cancers and eye cataracts. It also disturbs the nitrogen cycle, kills plankton, and disrupts ocean food webs. The total loss of the ozone layer would be devastating to most life. Its rate of loss has slowed with restrictions on pollutants, but it is still at risk.
Ans: Colt

Gill and Ann were two fellow botanists. Gill studied alpine tundras extensively, while Ann studied tropical forests. They both discovered very interesting facts about nature and plants. Which person learned less about rocky, snowcapped cliffs, and talus slopes? Hint: Alpine tundra occurs at high enough altitude at any latitude. Portions of montane grasslands and shrublands ecoregions worldwide include alpine tundra. Large regions of alpine tundra occur in the North American Cordillera, the Alps and Pyrenees of Europe, the Himalaya and Karakoram of Asia, the Andes of South America, and the Eastern Rift mountains of Africa.Alpine tundra occupies high-mountain summits, slopes, and ridges above timberline. Aspect plays a role as well; the treeline often occurs at higher elevations on warmer equator-facing slopes. Because the alpine zone is present only on mountains, much of the landscape is rugged and broken, with rocky, snowcapped peaks, cliffs, and talus slopes, but also contains areas of gently rolling to almost flat topography.Averaging over many locations and local microclimates, the treeline rises 75 metres (245 ft) when moving 1 degree south from 70 to 50N, and 130 metres (430 ft) per degree from 50 to 30N. Between 30N and 20S, the treeline is roughly constant, between 3,500 and 4,000 metres (11,500 and 13,100 ft).
Ans: Ann

Greg is an avid skier. He competes in many skiing competitions. He won several medals in those competitions. This November he will compete in two competitions - competition A, which is ski cross and competition B, which is an alpine skiing competition. Greg's fellow skier Bob is also competing in the same competitions. They both are exited about it. If Greg wants to compete with Bob racing down the couse at the same time, which competitions would they enter, competition A or competition B? Hint: Ski cross is a type of skiing competition. Despite its being a timed racing event, it is often considered part of freestyle skiing because it incorporates terrain features traditionally found in freestyle. Ski cross courses have both naturally occurring terrain and artificial features including big-air jumps and high-banked turns. What sets ski cross apart from other alpine skiing disciplines is that there's more than one skier racing down the course.[1] Any intentional contact with other competitors leads to disqualification.
Ans: competition A

Two botanists studied different types of plants. Barb studied anemophilous plants, while her friend Faye learned about entomophilous plants. Which botanist learned less about large and feathery stigmas? Hint: Anemophilous pollen grains are light and non-sticky, so that they can be transported by air currents. They are typically 2060 micrometres (0.00080.0024 in) in diameter, although the pollen grains of Pinus species can be much larger and much less dense. Anemophilous plants possess well-exposed stamens so that the pollens are exposed to wind currents and also have large and feathery stigma to easily trap airborne pollen grains. Pollen from anemophilous plants tends to be smaller and lighter than pollen from entomophilous ones, with very low nutritional value to insects. However, insects sometimes gather pollen from staminate anemophilous flowers at times when higher-protein pollens from entomophilous flowers are scarce. Anemophilous pollens may also be inadvertently captured by bees' electrostatic field. This may explain why, though bees are not observed to visit ragweed flowers, its pollen is often found in honey made during the ragweed floral bloom. Other flowers that are generally anemophilous are observed to be actively worked by bees, with solitary bees often visiting grass flowers, and the larger honeybees and bumblebees frequently gathering pollen from corn tassels and other grains.
Ans: Faye