<span>People depend on biodiversity in their daily lives, in ways that are not always apparent or appreciated. Human health ultimately depends upon ecosystem products and services (such as availability of fresh water, food and fuel sources) which are requisite for good human health and productive livelihoods. Biodiversity loss can have significant direct human health impacts if ecosystem services are no longer adequate to meet social needs. Indirectly, changes in ecosystem services affect livelihoods, income, local migration and, on occasion, may even cause political conflict.</span>
Fluids play an important role in maintaining homeostasis<span> within the body's systems.
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Molten Lava, and not solid like the crust.
Animal phyla are primarily defined according to B. Patterns of embryologic development and adult body plans.
