How do climate scientists estimate future temperature changes?
What will be an ideal response?
To estimate future temperature changes, scientists primarily examine different scenarios for fossil-fuel consumption based on projections of population growth (energy needs grow as population grows) and various expectations for conserving fossil fuels or replacing them with energy sources that do not emit greenhouse gases. These scenarios for fossil-fuel consumption are then used to estimate the changing concentration of greenhouse gases in the atmosphere, which is the most important factor for predicting future temperature change.
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When did the harvesting of commercial whale species cease?
a. When the International Whaling Commission formed b. When there were substitutes for the products produced from whales c. When the hunting of whales became uneconomical d. CITES- Convention on the International Trade of Endangered Species
The increasing percentage of heavier elements in the universe results from nuclear fusion during the evolution of ____________________
Fill in the blank(s) with correct word
In Queensland, Australia, cactus moths ________
A) effectively cleared non-native prickly pear cactus from rangeland B) are raised as a food source by native Aborigines C) are an invasive species D) are examples of species that have developed resistance to pesticides E) are a keystone species
Tidal movement, turbidity currents, wind stress, and even passing ships at the surface create ________ waves
A) internal B) ocean C) splash D) tidal E) turbidity