C. Rust forming on an iron fence
<span>Electromagnetic radiation will be emitted when any
object has a temperature above zero. The
reason behind this is that atoms within any object at a temperature above
absolute zero have energy, and thus is moving.</span>
<span>Atoms are at least partly composed of charged
particles, changed particles must be moving too.</span>
A. helium, neon and argon, because they are in the same group or column
<u>Importance </u><u>of </u><u>Circulatory </u><u>System</u>
- This system helps in transportation of respiratory gases like O2 and CO2, nutrients, hormones, enzymes, minerals, waste products.
- It helps in storage of essential substances for future use.
- It also generates heat to the body.
Hope you could understand.
If you have any query, feel free to ask.
