B. Because of the presence of hydrogen sulphide in Brass, it combines with oxygen in air and form water, evaporates. So remained sulphide is colourless in air .So Brass gets discoloured in the air.
Manufactured compounds called <span>chlorofluorocarbons (CFCs)</span>, that were being released into the atmosphere from products that contained them ,were largely responsible for the hole that developed in the earth’s ozone layer. This is why a lot of products containing CFCs such as styrofoam and aerosoles were banned in various countries.
Answer:
C) carbon dioxide is incorporated into PGA.
Explanation:
Light reactions of photosynthesis include splitting of the water molecule in presence of sunlight and release of electrons and oxygen gas, generation of electrochemical gradient during electron transfer from PSII to NADP+ via PSI and synthesis of ATP and NADPH.
The ATP and NADPH are used in the light-independent phase of photosynthesis which includes the Calvin cycle.
The first stage of the Calvin cycle is carbon fixation during which carbon dioxide is fixed into 3-PGA (3-phosphoglyceraldehyde). Carbon fixation is followed by reduction and regeneration of RuBP.
Answer: tt
Explanation: If the allele for a trait is recessive, it has to have 2 of that recessive allele to show that trait.
