Hey there~
Double fertilization gives rise to an endosperm that provides nourishment to the developing embryo. It increases the viability of the seeds of angiosperms. It utilizes both the male gametes produced by the pollen grains.
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What kinda question is this, is there a picturnu forgot
Answer:
kitchen sink
Explanation:
Blackwater is a mixture of the substances that come from cleansing water and greywater is the one that comes from the things that are not in the toilet.
Greywater that should be considered as blackwater is water from the sink. It contains fats and oils and many organic substances.
Blackwater has a big range of materials that put it into this classification. It should be treated with chemicals for disinfection.
More plants that produce oxygen.