The food that we eat is made up of different types of macro molecules. Energy are stored in the chemical bonds of these macro molecules in form of chemical energy. When humans consume these food, the chemical energy in the food is transferred into their systems and it is this energy that is used to carry out all the life activities. This chemical energy can be inter converted into various forms. When the body needs warmth, the chemical energy will be converted to thermal energy to produce heat.
Part A:
I believe your best answer A. "Big Year" birders compete for honor, love and record-setting.
1) honor and record-setting: As stated, 'most people who want to break such a record...'
2) love: "... most people who want to break such a record know the greatest rewards are not necessarily winning. Such rewards are in being able to commit a year of your life to <em>doing something you love.</em>" (emphasize added)
Part B:
F. Most birders <em>take pride </em>in their reputation and their abilities to see or hear and then identify a bird. (emphasizes added).
"Most birders take great pride in their reputations and their abilities to see or hear and then identify a bird. Usually, important sightings of the rare birds needed to get counts in the 700s are visited by hundreds of birders. It is pretty hard to cheat your way to a record-breaking year, but in general, few are interested in cheating."
H. Such rewards are in being able to commit a year of your life to doing something you love
"... the birds these contestants are counting are the number that they see in a particular year."
hope this helps
