Hello, Dana! ^^ Thank you for submitting your homework. ^^ I like your idea about the evolution theory. ^^ We will discuss this later.

~~

CORRECTION:
1.
Dana: The word 'evolution' means over many centuries, living things changed to adapt in their environment. 
correct!

2.
Dana: The reason Darwin made evolution theory is because he secured evidence in Galapagos Islands like Galapagos finch.
correct: The reason Darwin made the evolution theory is because he secured evidence in Galapagos Islands like the Galapagos finch.

3.
Dana:  Also, one of the typical cases is human.
correct: One of the typical cases of this is the human.

4.
Dana: The start of human is australopithecine.
correct!

*You can also use a different term for the word start.

5.
Dana: There aren't many differences between australopithecine and anthropoid outwardly.
correct!

6.
Dana: However, after considering that australopithecine started a cultural life, using tools, and got a concept of the word 'relative', they are beginning of human.
correct: However, after considering that australopithecine started a cultural life, used tools, and got a concept of the word 'relative', they were considered the beginning of human.

7.
Dana: After australopithecine, many fossils such as Homo habilis, Homo erectus, Homo sapiens, Homo sapiens sapiens were found, so the evolution theory is asserted as 'about right'.
correct: After australopithecine, many fossils such as Homo habilis, Homo erectus, and Homo sapiens were found, so the evolution theory is asserted as 'about right'.

8.
Dana: Evolution theory has enough evidence.
correct!


9.
Dana: It's just that the people who assert evolution theory don't know the specific process, so they call it theory.
correct: It's just that the people who asserted that evolution theory is just a theory because they don't know the specific process.

*Explanation: Your sentence was rephrased and rearranged.

~~~~~~~~
See you later, Dana. ^^ Happy Tuesday! ^^