The UV rays cause sun spots due to reaction from the radiation.
500 million for the first picture and for the text i guess it evolved physical reproductive body cells and parts that makes sexual reproduction change as itself as well as birth due to not only human nature but man made things as well, example: hospitals, medicine, chemicals, etc.
They are also called "Land Plants" that are non-vascular!
Hope this helps!
B. The area's climate
Specific plants need specific climate conditions in order to survive. The other answer choices have little to no impact on the growth of plants.
Humans have higher brain functions
