78% of the atmosphere is composed of nitrogen
The resistant insects are able to survive to reproduce and create a population that is also resistant
Answer:
d the amount of matter in a closed system is the same at the start of a reaction as at the end of the reaction
Answer:
Humans have breached this cycle by digging up fossil fuels and burning them, leading to carbon dioxide building up in the atmosphere faster than natural systems can soak it up. This has led to a net increase in greenhouse gases in the atmosphere, causing the planet to heat up.
Explanation: