What an object is made of
Three scientists are credited with the development of cell theory. Matthias Schleiden observed that all plants were made of cells; Theodor Schwann observed that all animals were also made of cells; and Rudolf Virchow observed that cells only come from other cells.
C waning crescent and waxing crescent
No problem
so
Chain 1. Sun -> Tomato plant -> Tomato -> You
The sun provides energy to the tomato plant which is used to grow a tomato which is eaten by you.
Chain 2. Sun -> Wheat -> Flour -> Bun -> You
The wheat uses the sun's energy to grow when the wheat is mature it is used to produce flour which is used to bake the buns for the hamburger which is then eaten by you again.
Chain 3. Sun -> Lettuce -> You
The lettuce grows and uses the sun's energy to live it is then eaten by you in the hamburger.
Hope this helps :).