A OXYGEN ... almost 99% of mass in the body is made up of oxygen ,hydrogen ,nitrogen calcium,carbon so on
Pieces of code that are executed after the virus or worm has spread are called payload.
A lake: theres algae in there. As well as different kinds of fish. Also frogs/tadpoles. Birds sometimes cool off in here as well. There are also abiotic factors of rocks, flowers, water, and sand/dirt.
b) introducing biological predators eg to kill mice in rice field snake can be used
