Transportation in the Philippines it has the largest number of international flights to the Philippines as well as domestic flights. The Philippine Airlines links Manila to 48 cities in 4 continents, and flies regularly to 41 domestic destinations outside Manila. Philippine Airlines also serves twenty destinations in the Philippines and 32 destinations which are all located in Southeast Asia, South Asia, East Asia, Oceania and North America. Cebu Pacific is the low fare leader in the country, and is the country's leading domestic airline. It links Manila to 21 different domestic destinations in Philippines and to 39 international destinations with its direct flights. After
Ocean acidification in the Arctic Ocean which play an important role in the food-web of various ecosystems. Since they harbour an aragonitic shell, they could be very sensitive to ocean acidification driven by the increase of anthropogenic CO₂ emissions.Laboratory tests showed that calcification exhibits a 28% decrease at the pH value of the Arctic ocean expected for the year 2100, compared to the present pH value. This 28% decline of calcification in the lower pH condition is within the range reported also for other calcifying organisms such as corals. In contrast with sea urchin and bivalve larvae, corals and marine shrimps are more severely impacted by