Explanation:
Melanin is the pigment which absorbs UV light and it is present in skin and gives black colour to it.As we can see africans usually have black skin as they have to face direct uv light.
It’s nitrogen! Hope this helps
Answer:
A very short history of climate change research. The story of scientists discovering climate change is longer than many of us tend to imagine.
We’ve had a sense that what humans do might effect the climate since Antiquity.
