11. Is B. Ways scientists communicate results
12. Is B. A globe
13. Is A. True
Hope they're all correct!
DNA<span>) is a nucleic acid that contains the genetic instructions for the development and function of living things. cellular life and some viruses contain </span>DNA<span>. The main </span>role<span> of </span>DNA<span> in the cell is the long term storage of information.</span>
Stereomicroscopes is that they have a much lower magnification limit than other microscopes, such as the compound microscope, for instance. The stereomicroscope can magnify an image 100-150 times, while normal compound microscopes can magnify an image 1000-1500 times. This can be a disadvantage of stereomicroscopes, because not as much detail of the image is seen.
Explanation:
probably A but I'm not sure about it
The easiest example here is a computer/laptop... e.g. when the CD-ROM is spinning when you are perhaps playing a movie, the kinetic energy causes friction, which results in heat. All computers need a fan to prevent them over-heating for this very reason. Therefore heat is lost and energy is wasted.
Another example is a lightbulb. When a light is switched on and left for a long time, the current flowing through the filament (the thin bit of wire in the bulb) causes heating (due to electron-ion collisions but you may not need to know that) so energy is wasted as thermal energy instead of light energy.
These are just a few examples but other ones you could use are tv screens, kettles, toasters, etc :)
