B. hydrosphere
Why? The hydrosphere contains all the waters on the earth's surface, including atmospheric moisture, such as clouds.
You're welcome. :)
Pulmonary vein
Aorta
Pulmonary artery
Vena cava
It's a cell wall, common to some types of cells, like plant cells (one notable component of the cell wall is <span>cellulose, which is exactly where we obtain it from</span>).
<span>C) sex cells with half the original chromosome number.
Hope this helps!
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