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.
1 Clean onion and place in a large bowl. 2  Add â cup salt and 4 cups of water then let sit for 4 hours. 3  Meanwhile make spiced vinegar by bringing to boil 4 cups of vinegar and the pickling spice. 4  Drain and rinse onions then pack in quart jars, You can half or quarter onions to get a tighter pack if they are a bit too large.