It means it has undergone a physical
change that changes its physical properties. The substance of the
matter did not change. This change in the
physical property is also reversible. These
are characteristics of physical change.
This is different from chemical change that irreversibly
changes the substance of the matter.
Answer: 81 + y; she collected 112 shells altogether.
Haploid; reproductive
After the halving of chromosomes, the cell becomes a haploid and this is done for gametes, or reproductive cells.
