What have you learned about the importance of the rocky intertidal zones health and biodiversity?

Rocky intertidal zones hosts variety of organisms such as algae, seaweed, snails, crabs, etc. However, scientists have divided the zones into further three zones namely high tide, middle tide, and low tide. These divisions are mainly based on oxygen level. For example, those organisms that cannot surive high oxygen concentration are often found in the low tide zone. This is the reason that low tide zone hosts maximum biodiversity and thus also used as a health proxy for a coastal ecosystem. A decline in biodiversity in low tide zone is a serious concern of marine ecosystem.

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

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