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.
Pseudopodia are formed by microtubule and filament structures. The cell surface projects a membrane process called the lamellipodium, which is supported inside by filaments that form at the leading edge, turning into networks as they merge. Cytoplasm flows into the lamellipodium, forming the pseudopodia.t is supposed that actin polymerization is at the origin of the force propelling the cell forward. Pseudopodia (false foot) are temporary cytoplasm-filled projections of the cell membrane that certain eukaryotic cells use for motion or for ingesting nutrients.