1- 4 Na + O2 —> 2 Na2O
2 - 4H2 +2O2 —-> 4H2O
3- Na2SO4 + CaCl2 —> CaSO4 + 2NaCl
4- 2Al2O3–> 4Al+ 3O2
5- N2 +3 H2–> 2 NH3
6- 3Fe +4 H20–> Fe3O4 + 4H2
I’m having trouble reading the last ones .
Answer:
When the level of release of carbon dioxide during respiration and use of carbon dioxide during photosynthesis this results in a compensation point. At compensation point the net available carbon dioxide to phototrophs becomes zero. As, carbon dioxide is the chief ingredient for photosynthetic products like glucose and oxygen. These products are used up during the process of respiration. When the rates of two processes photosynthesis and respiration becomes equal. Phototrophic organisms will not be able to compensate for lack of carbon dioxide levels. Phototrophs will not be able to produce their food in the form of glucose and hence will not be able to respire too. This will result in lack of overall available food from phototrophs and lack of available oxygen for respiration. This will result in decline of organisms on earth.
These are properties of water that occur due to the hydrogen bonding in water: cohesion, adhesion, surface tension, high polarity, high specific heat capacity and high heat of vapourization.
These properties makes water to be a unique universal solvent.
According to Koppen climate classification system, humid tropical climates do not experience winter. The koppen climate classification system uses mean monthly and annual values of precipitation and temperature to classify a climate. The humid tropical climate classification has a mean temperature of above 18 degrees Celsius and the precipitation can be more than 200 cm/year. This climate does not experience winter.
Some individuals are more likely to survive and reproduce than others because they are fit and easily adapting. This idea is called 'survival of the fittest'.