Undergraduate / 'As soon as I arrived in France' - Life is a challenge personal statement essay [3]

The first paragraph, which revolves around your father as your source of inspiration, woudl be a good start in certain topics, but I doubt it fits the bill here. You are asked to write YOUR autobiography, it should revolve around YOUR life. Start off with something about yourself.

In fact, the whole essay gives the impression that you're writing about your source of inspiration. You are being asked to talk about your life, and how you think it would be decades from now, and what you have accomplished in the years. Basically, I suggest you plan out a little bit of how you want your life to be, and talk about it from your older POV.

Good luck.

Undergraduate / AIF Waterloo Biomedical Sciences: Goals, Interests, and Reasons. [6]

I agree with Lomstein. Apart from that, you must mention a sentence or two about why you wish to attend Waterloo. Your essay as of now is bland and factual. Make it personal.

Undergraduate / Is English my own? (why I love English better then my own language - Portuguese) [4]

....in my life that I was able to experience foreigner a foreign culture and being able to apply English at on a daily basis.

There might be a few simple grammatical errors, so do read through it once again. Also, for the sake of formality, cut out the contraptions (it's, didn't, etc. )

Otherwise, it is a perfectly well written essay, concise yet personal.
Good luck!

Scholarship / 'I wanted to become a computer programmer' - Essay for an scholarship [2]

That it's a long dream that I have but I know I can accomplish it if I put the effort and heart.

this sounds better as follows:

It's a big dream, but I know that if I put in effort with all my heart, I can accomplish it.

It's a very to-the-point essay, which is a good thing in your case, because it shows your character as a direct programmer. However, the starting "since I was a child..." strikes me as odd. You couldn't have discovered your passion for programming as a kid, just a passion for computers. So you might want to change that.

Good luck for your scholarship.

Undergraduate / Meditation- CommonApp EC short answer response [3]

Very well written.

The first paragraph, though, is written in past tense, and the second in present. Maybe it would sound better if both were present. Then the first para would be more gripping.

Good luck.

Scholarship / Push for the finish line. Business scholarship. Ethics in Business [2]

I believe these are the principles that HAVE made America such a great country.

I want to continue to pursue my passion..

There might be some more grammatical errors, which you will be able to figure out when you read through it once more. Otherwise, it seems fine.

Good luck!