Answer:
It is a cycle because oxaloacetic acid is the exact molecule needed to accept an acetyl-CoA molecule and start another turn of the cycle.
Answer:
Food - Cow & Rabbit
Fiber - Alpaca & Camel
Work - Donkey & Horse
By-products- Cow & Sheep
Research - Monkeys & Rats
Entertainment - Dogs, Cats, Hamsters ect.
Esa canción la conozco jaja
Viruses have both rna and dna