Proteins are made of amino acids!
Hope this helps!
-Steel jelly.
Answer:
A. Wind
wind is a renewable resource because there is unlimited supply of it.
Explanation:
Growing willow for biofuel is sustainable development because it is a source of fuel which potentially will never run out. For every willow tree that is cut down, another can be planted in its place. This means that the source of fuel is potentially limitless and subsequently sustainable.
I'm sorry, but I would need to see the options.
Natural variation provided the phenotypes that natural selection then acted on, over time causing evolution
