Tips for using the tracing numbers worksheets. Start with the writing numbers worksheet for number 1. That is not only the first number your child will begin counting with, but it is also the easiest number for children to write. Direct your child to trace each number following the direction of the arrows to learn the proper formation.
Marine debris can enter the ocean in a variety of ways. From land, trash may be carried to the ocean in rivers or storm and sewage drains, swept from the beach by waves and surf, or blown offshore by winds, especially during heavy storms.he most common way to measure floating plastic in the ocean is to collect it using very fine-meshed nets towed at the ocean surface from a ship. At SEA we have been measuring plastic debris using this method for more than 25 years.
Ocean dumping. Shipment of waste from country to country can also involve dumping waste into the ocean. Ocean dumping has been a problem since the 19th century. It was legal to dump industrial waste into the ocean until the Ocean Dumping Act was passed in 1972. During the years of 1970 and 1980 alone, it was estimated that 25 million tons of waste including scrap metal, chemicals, and acids were dumped into the ocean. Ocean dumping can lead to eutrophication which depletes the oxygen from the water, in turn killing marine life.