All of these are not part of the life cycle. It's man-made. Think of it in biology terms - something that's created genetically.
It’s the release of harmful gases e.g. carbon dioxide into the environment due to human activity, therefore causing a rise in global temperatures, which is climate change. Warmer temperatures negatively impact our environment because it causes a decrease in biodiversity, allows more diseases to spread(most live in warmer temp.) and so on.
Answer:
p18, p21 and p27
Explanation:
Four proteins have been obstructed in this investigation and the concentration of DNA synthesis was evaluated in various cell cultures and seeing which proteins could play a significant role in the cell cycle.
Iron, oxygen and water react with the iron creating a substance known to us as rust.
Hope this helps.