Answer:
the composition of a population gene can change over time through evolution
Explanation:
Nature selects
They become packed together to stop moving. I think im right?
Emperor penguins are a vital part of the Antarctic food chain – they eat creatures like squid and small fish, and are an important source of food for predators like leopard seals and large sharks
Acidity.
If it has less acid it is considered an alkaline
If it has more acid it is acidic
What?? what are you trying to say please be more specific