Science question and reflection

Selene: blue
Janice: Purple

1. How does plants selective breed after using brush to transfer pollen to the stigma?
2. How do you know when the plant is selective breed but not wild plants?
3. What chemicals of the metal make it tarnished?
4. Why do some metals doesn’t react with a specific acid?
5. What happen inside the battery when it is old and cannot use? Why does battery run out? (For example AA batteries)
6. What can you use Thermite for?
7. Where are chromosomes located?
8. Besides having a weird shape of your blood cells, what are the effects of sickle cell?
9. What are the three types of cloning?
10. Can metals be acidic? If so, name one.

My reflection:
I think today's class revision helps me to refresh my memory, because I haven't study for some time since I've got homework to do. I think the revision didn't help much, but makes me wanted to study from now on, since I already brought back my ideas from the term 2 units. If I studied for some time in the past, I might think this isn't useful, because I'm already in a higher level. But now I'm down at the bottom again, so I'll study and build up, remember what I've learned.

For the presentation, I would keep it up and try to speak slower. I think I spoke too fast, and I'll try not to read off from screen like I did in other subjects.