Photosynthesis matters to me because.....

Site:

http://www.youtube.com/watch?v=y75j32wDuu4&feature=player_embedded

Photosynthesis matters to me because.....it helps plants grow and without it, we wouldn't have oxygen and glucose from plants which, when consumed, our body breaks down to make ATP.
The video helped me understand the process of photosynthesis through a song.

Scientific Curiosity

The thing that I've been curious about is how your blood travels through your body and how does your heart pump that blood throughout your body. . These questions have always come to mind: How does your heart pump blood to go into our blood vessels? How does the blood make it so that you can feel your pulse? I have wondered if the beat of your pulse has/or does coincide with the beat of your heart.

Also, along with the beats do they both coincide with making one beat at the same time or rythmic beating or do they not beat at the same time. The reason I was interested in this specific phenomenon was because when ever I exercise or workout for a long time I have to feel my pulse and time the beats and I have always wondered how we are able to feel our pulses or where they came from and since we could feel our hearts beating fast because we are breathing really hard if they were linked together and if their beats are similar or not.