I need the full question but we breathe air which is 02
Answer:
The annual average CO2 concentration for 2021 could be around 416.3ppm, according to Meteorological Office estimates. An annual rise of about 2.5 ppm is possible, which can potentially make 2021 the first year with the annual average CO2 at 50 per cent above pre-industrial levels, the estimates noted
Water cycle affects ocean salinity on different levels.
For example, evaporation of ocean water increases the salinity of the ocean, while precipitation and melting of ice decrease it, achieving the balance. Temperature, salinity and water cycle are tightly connected. As global temperatures rises, evaporation increases, and so the salinity. Salty ocean has a tendency to sink. On the other hand warmer ocean rises to the surface and this has influence on ocean currents which then impact the weather.
The ability to reproduce sexually or asexually