The different forms of a gene are called alleles
When we use electronic devices in the classroom we must be:
- We have to be careful and always inspect all electrical equipment before using,
- Regularly inspect the equipment,
- Keep the power cord away from the floor and do not place objects on it-
- The ropes should not be twisted
- Attention must be paid to the electrical device while it is being used.
Explanation:
the eggs seems to be rotten because when we add enough salt into water the density of water becomes greater than that of egg ,hence the floats and seems to be rotten
