Your answer would most likely be chlorophyll. :)
This can be known as trade in some places and kingdoms. But historically, the spread of ideas and culture is know as Trans-cultural diffusion.
Hope this helps :)

A solar eclipse occurs when the Moon is between the Earth and the Sun.
The Moon casts a shadow over the Earth, fully or partially blocking out sunlight.
Because of how the Moon is positioned at these times, solar eclipses only occur during the new moon phase. However, not every new moon comes with a solar eclipse.
I think it's either coal, petroleum, or peat
Hope this helpa
I believe the answer is b. glutamate from glucose and ammonia