- Oxygen cycle is the cycle which maintains the level of oxygen in the atmosphere.
- Oxygen from the atmosphere is used up during combustion, respiration and in the formation of oxides of nitrogen.
- This oxygen is returned to the atmosphere by lithosphere.
- This forms the oxygen cycle in nature.
Hope you could get an idea from here.
Doubt clarification - use comment section.
It would be C... 0-6 is acidic, 7 is neutral, 8-14 is basic
2 strands of DNA=hydrogen bonds
2water molecules=polar convalent bonds
NACL=ionic bond
H2=ionic
Carbon could form to Carbohydrates, Lipids, Proteins and Nucleic Acids when bonded with other carbon atoms
Answer:
Sensitization.
Explanation:
Hypersensitive reaction may be defined as the exaggerated or hyper response of the immune system. Hypersensitive reactions can occur due to auto immunity and allergies.
Type I hypersensitive reaction is mainly mediated by IgE antibodies. The sensitization towards particular stimuli like pollen grains may exaggerate the Type I hypersensitive reaction.
Thus, the correct answer is option (1).
