B hope this helps a lot :)
Answer:C
Explanation:It does not support the idea that there is a great reduction in any sector of greenhouse gasses . The lines in the second graph remain reasonably flat throughout the sectors in the graph.
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seed coat protects the cotyledons and embryo from outer environment and from attack of pathogens
pollen grain has a sculptors covering with weak points(germ pores) in it through which pollen tube comes out.
A spore is generally protected by 2-3 tough resistant walls around to tied over the unfavourable conditions.
