This is because elements are pure substances with only one atom. When two or more elements are combined, you get compound elements; which allows for more substances to be created.
5: true
6: Oxygen
7: H+
8: true
The important point is that the surface area to the volume ratio gets smaller as the cell gets larger and as volume increases, surface area to volume ratio decreases. The larger a cell, the less easily it can get rid of waste and it also has more trouble getting water, nutrients and gases in. That is why we do not see giant cells. Instead we see multiple cells in larger organisms.
One way to increase surface area is to flatten the cell. That is why red blood cells are flat discs, instead of spheres. Another way is elongation. That is why many bacteria are rod shaped, and why neurons are elongated. In fact, the human body relies on the same principle to adapt to climate. Long tall and lean folks with long arms and legs live in East Africa, because such shapes increase surface area to get rid of excess body heat to avoid heat strokes. Europeans and Asians adapted to cold climates, in contrast, have shorter arms and legs and rounder torsos to minimize surface area. to conserve body heat.
1. Drugs
-it’s important that teens know what’s out there and what some of these drugs can do to people.
2. Sex
-adults/parents need to stop acting like this is something bad, it’s normal and they need to teach us how to protect our selves and same gender sex as well bc high school and probably middle school students are confused and need help but they can’t ask their parents bc they are too afraid.
3. Buying a house, car, investment
- it might be early but students need to know these stuff about life
4.Money management
- students go into a deep debt and can’t get out bc they didn’t know how to manage their money and go crazy with loans
A scientist collects data (information found by experimenting)
