Animals ingest food containing carbon sources such as carbohydrates, proteins and lipids. (Which they get from plants that have absorbed and converted the carbon dioxide into other energies). They then metabolise these substances to produce waste products. One of these waste products is carbon dioxide which they breathe into the atmosphere. Also animals faeces is broken down by bacteria which give off carbon dioxide as they do so.
It could cause drought and famine I believe
Mainly because of the fact that in January the Earth is tilted away from the sun, reaulting in those cold winter nights. However, in July the earth is tilted more toward the sun resulting in those warm sunny days.
