The world's biggest container ships have 109,000 horsepower engines which weigh 2,300 tons. Each ship expects to operate 24hrs a day for about 280 days a year. There are 90,000 ocean-going cargo ships. Shipping is responsible for 18-30% of all the world's nitrogen oxide (NOx) pollution and 9% of the global sulphur oxide (SOx) pollution. One large ship can generate about 5,000 tonnes of sulphur oxide (SOx) pollution in a year
(October 2007) A pseudopod or pseudopodium (plural: pseudopods or pseudopodia) (from the Greek word ÏÎµÏÎ´Î¿ÏÎ¿Î´ÏÏ, ÏÎµÏÎ´ÏÏ false + ÏÎ¿Î´ÏÏ foot) is a temporary cytoplasm-filled projection of a eukaryotic cell membrane or a unicellular protist. Pseudopods may be used for motility, or for ingesting nutrients or other particulate matter.
Pseudopods are one of the three locomotion modes of unicellular organisms (together with flagella and cilia). Pseudopods can also capture prey by phagocytosis. Pseudopedia are used by some cells to move around. They can detect food and place it inside the cell. The human white blood cell uses this way to get around. Pseudopods can be classified into several varieties according to their appearance: Lobopodia are short and blunt in form, very typical of Amoebozoa.