Pumpkin puree, most frequently used to make pumpkin pies during the holidays, can also serve as an egg substitute in baked goods. It works especially well in dense, moist items, such as sweet breads and muffins. Trade 1/4 cup of pumpkin puree for each egg in the recipe.
Our Earth is also considered as an ecosystem on a much larger scale. When we introduce external factors such as too much carbon dioxide or methane, it destroys the balance of the ecosystem which in turn affects those who live in it. The result is global warming, water shortage, extinction of species, etc. These impacts every living thing on the planet, which includes us.
1.2 Ecosystems depend on fundamental environmental cycles such as the continuous circulation of water, carbon, and other nutrients. Human activities have modified these cycles, especially during the last 50 years, through increases in freshwater use, carbon dioxide emissions, and fertilizer use.hanges in biodiversity at a particular location affect the ability of the ecosystem to supply services and to recover from disturbances. More... 2.5 When humans modify an ecosystem to gain something, it often has negative effects on other components of ecosystems, leading to trade-offs.