Hormones because if you think about it. Vertebrates must have backbones and mammals have them. And, humans are basically mammals. And the glands secrete hormones.
Answer:
but the problem is a good one that I don't think it's going for me in the future and hw will be 6666inches for a while and hw is the only way of doing that yo I don't want it is it and I'm still in love and hw will be the first time I've seen her on my phone pa I don't want her back in my room but 6AM to
A carbon atom has 4 valence electrons
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A plant cell is surrounded by rigid cell wall whereas animal cell does not have cell wall. Presence of a large vacuole in plant cell, which is small in animal cell. Plant cells are larger than animal cells. Plant cells have plastids whereas animal cells do not have plastids.