Overall, environmental science is the field of science that studies the interactions of the physical, chemical, and biological components of the environment and also the relationships and effects of these components with the organisms in the environment.
1 Add onions to glass jars or a bowl. 2  Toast cinnamon, cloves and the red pepper flakes in a small saucepan over medium heat until fragrant, 3 to 5 minutes. 3  Whisk in vinegar, lime juice, a 1/4 cup of the sugar and salt. 4  Bring to a simmer and cook until sugar and salt have dissolved, 1 to 2 minutes.
Instructions. 1  In a large saucepan, heat oil over med-high heat. Add the onion & cook for about 3-5 minutes until soft. 2  Pour in the stock & any other seasonings you like, including salt. Bring it to a boil, then reduce the heat to a simmer.