Because green house air is like carbon dioxide and is toxic for people to breathe in but they want to put it under an act that says it will cause u no harm
a chemical substance produced and released into the environment by an animal, especially a mammal or an insect, affecting the behavior or physiology of others of its species.
The process of DNA replication occurs just before S phase. In the interphase, the cell has growth and replication of DNA is getting made. In the G1 phase, there is the growth, (G1-checkpoint - cell size, growth, environment shows cell is ready to start replicating DNA. S phase- DNA is replicated.