Phoebes Levine proposed the polynucleic model (around 1910!).
The lion population will decrease because their prey is being hunted
An aloe vera plant possessing a trait for extra thick leaves survives very long droughts in deserts, while and aloe vera plant that doesn't have thick leaves doesn't.
Answer:Yeast and Bacterial ribosomes have the same number of rRNAs in them
I think Oxygen is the best answer.
