Answer: global warming
Explanation:
Global warming is simply referred to as the long-term heating of the surface of the Earth and this is caused by human activities, and also the burning of primarily fossil fuel, which brings about the pumping of carbon dioxide, greenhouse gases and air pollutants into the atmosphere.
The weatherizing of buildings to reduce heat loss and save on fuel costs has led to an increase in global warming.
Throughout the day there are changes in carbon dioxide concentration. The peak is at 8 AM at 1000 ppm and The lowest is at 4 PM at approximately 700 ppm. The earlier it is, the more concentration of carbon dioxide and in the evening it is there is less concentration of carbon dioxide . Hope this helps :)
Answer:
The process of photosynthesis is when plants take in co2, sunlight and water which it needs to live. and it gives out oxygen and its food glucose
Explanation:
Underwater living faces many of the same life support challenges as living in space. ... But in the future, underwater habitats might provide their own oxygen with artificial gill technology to extract dissolved air from the sea water
Since humans do not have gills, we cannot extract oxygen from water. Some marine mammals, like whales and dolphins, do live in water, but they don't breathe it. They have developed a mechanism to hold their breath for long periods of time underwater.
To put these depths into perspective, three American football fields laid end to end would measure 900 feet (274.32 m) long — less than the distance these divers reached underwater. Most recreational scuba divers only dive as deep as 130 feet (40 meters), according to the Professional Association of Diving Instructors.
