Some are:
limes
pie
rice
rye
tripe
You can freeze many foods. Some foods can be salted. Canning or putting it into jars can keep many foods fresh. You can also pickle or brine some foods. Some foods keep well if you just seal them into plastic.
A long vowel is one where you hear the name of the letter: A (ay), E (ee), I (eye), O (oh), or U (you). Some long U sounds are long OO sounds, as in dune and flute.
No.
They use foods that must last for a long time since they can't just walk into a supermarket and buy food. some examples are dried fruits & nuts and canned foods.
It depends on the specific word and its pronunciation. Some words have short vowel sounds, while others have long vowel sounds.
Some are different experiments so theres no right answer.
so that they will stay fresh for as long as you want.
Many people get 'short term' rhinitis from some foods, but it sounds as though you have an allergy to apple concentrate.
Elephants make sounds with their larynxes just as we do. Their long trunks help to modify some sounds and trumpeting is achieved by blowing through the trunk.
A "long" vowel sound is mainly when you hear the "name" of the letter in a word. A short vowel sound is an exhaled sound, such as "ah" or "eh" or "uh." Some sounds are neither long or short but a combination sound. Examples: fat (short A) - sounds like faht (f-ah-t) fate (long A) - sounds like fayt (f-A-t) A words that end in Y are typically all "long A sounds" : bay, day, way
some foods are fish
The long A "says its name" (ay as in day). The short A is an "ah" sound as in apple and cat. *In some pronunciations it can be different, as for the words bad, crab, and last. This can be heard as the different sounds in the words cab and cabin.