Answer:
These spheres are closely connected. For example, many birds (biosphere) fly through the air (atmosphere), while water (hydrosphere) often flows through the soil (lithosphere). In fact, the spheres are so closely connected that a change in one sphere often results in a change in one or more of the other spheres.
Explanation:
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The brain is an organ in your head, protected by your skull. It allows you to doall essential tasks.
White blood cells move into and out of blood vessels by the process of chemotaxis
I think it would be vascular
Explanation:
i think u should ask Google first i don't think my answer is right i don't to mark u wrong please sorry