The British naturalist Charles Darwin developed a theory after observing species in the Galapagos Islands. What is the name of this theory?
А
Theory of Gravity
B
Theory of Relativity
С
Pythagorean Theorem
D
Theory of Evolution

Correct answer is D . Theory of Evolution

Explanation:

Option A is not correct as it is mostly attributed to English scientist Isaac Newton.

Option B is not correct as this theory is associated with Albert Einstein.

Option C is not correct as it is theory created by Greek philosopher and mathematician Pythagoras.

Therefore D is correct as Darwin developed this theory about evolution of all species.

fertilization is the union of an egg and a sperm cell i believe.