I have tried many times without success to find out who is supplying Costco with it's gasoline. In our area it is delivered by an independant fuel delivery service so unless you followed the truck you would not know where it is comming and going to. The supplier could also change from time to time based on bidding.
Oceans around the world are becoming degraded. Evidence shows that human activities, including intense fishing around the world, are altering ocean ecosystems beyond their natural state. According to numerous scientific studies, fish, shellfish, and other important species are declining in many places.
Surprisingly for the non-specialist on marine ecology, the most significant impact of. ocean currents on marine life consists of the enhancement of primary productivity, and. that is the reason why this article is placed within the Topic Productivity of the Oceans. This is so because primary production in the ocean is limited by availability of light and. nutrients.