Answer:
First, lets add the missing piece of information
a. He worked on the manuscript for three years.
b. It was successful.
c. It explained his theory of evolution.
d. It was based on his findings in South Africa.
The CORRECT ANSWER IS d.
d. It was based on his findings in South Africa.
Explanation:
On the Origin of Species was a book which main focus and central theme was focused on the observations that Charles Darwin noticed on the Galapagos Islands, which is in proximity and closeness to today's Ecuador - west of South America. The option d "it was based on his findings in South Africa." Is absolutely wrong since the study wasn't carried out in South Africa - as South Africa is a totally different continent.
The forces beneath the earths crust that makes volcano's erupt is Magma and the rocks around it, which both make its way up to a volcano by going through the cracks of the Earth's crust, when making their way up they release pressure that causes a volcano to erupt.
The cell wall is what gives plant cells their shape. The cell wall, not to be confused with the cell membrane, is a rigid structure made up of long cellulose fibers, branching hemicellulose fibers, and pectin. The fluid pressure inside the cell also contributes somewhat to their shape.
This question is pretty vague and confusing.
you didn't list choice but i'm guessing chloroplasts