Sharing ecosystems with other species by establishing habitats that conserve biodiversity in places where people live and work is called ecology
A life raft
B reconciliation
C reintroduction
D urban

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

energy and particles

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above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.