Blood lead level

Trophic levels are the feeding position in a food chain such as primary producers, herbivore, and primary carnivore. Green plants form the first trophic level, which are the producers. Herbivores form the second trophic level, while the carnivores form the third and fourth trophic levels. A food chain is the feeding of one organism upon another in a sequence of food transfer. Another definition is…

Because of the ocean water evaporating, the water was being sealed up onto the land as ice. This ice sheet build up has drastically lowered worldwide sea level. Throughout the shorter, hotter, breaks called interglacials, the ice sheets have degenerated, and with the water from the glaciers melting and draining back into the oceans, the sea level has increased. Since the coldest part of the last ice age that happened about twenty thousand years ago, to now in the present day, worldwide sea…

Sea level continues to rise in recent years, but also that the rate gradually accelerated, according to some data of observations. Sea level is rising primarily because as global temperatures increase, oceans are warming, which causes sea water to expand; and land ice is melting, which transfers water to the ocean. The rise of sea level will increase the risk of the coastal inundation. “Climate change will not introduce any new types of coastal hazard” (Manatu Mo Te Taiao, 2004), but the climate…

human population continues to increase, more and more animals’ habitats are threatened by expanding developments as well as deforestation caused by expanding cities and establishments. As well as this, changes in climate and the increase in water levels have also affected many marine species that are unable to adapt to the new conditions. The rate at which animals have become extinct in recent years has increased to a chilling amount, which is currently an approximated 200 species every…

issues. The purpose for this book becomes clear early in the story, what is happening to our climate, and how do we fix it. One of Hansen’s main points in this book is that sea levels are becoming dangerously high from ice sheet melting, and once they pass a certain melting point it will become impossible to stop sea level rise. One of the great strengths of this book is that Hansen is an expert in the climate change field and provides facts to back up his predictions. However, at times the…

Ecosystem energies flow through many trophic levels. A trophic level is the level organism's occupy within the food chain. There are generally five trophic levels: primary producers, primary consumers, secondary consumers, tertiary consumers, and apex consumers. These five levels all interact with each other to ensure bio-viability. The first trophic level contains the primary producers. They are called the primary producers because they produce their own food and energy. Primary producers…

each for food. A food chain is a sequence of organisms that feed on each other. Although the design of a food chain can vary by ecosystem, all food chains are made up of the same basic trophic levels. Trophic levels are the levels within the food chain where an organism obtains its energy. The tropical levels contain the producer, consumer and the decomposer. Food chain can also be represented by pyramid The above energy pyramid shows many grass providing food and energy to zebras on…

Hearing Rod Sterling’s comments were extremely helpful. After watching my first episode of the Twilight Zone with my Dad a few years ago, I always wondered where the ideas for The Twilight Zone spawned. Thus, when the students asked the question, “Where do ideas come from?” I was delighted to hear Sterling’s answer. His answer was quite profound. Sterling simply answered that ideas come from “one’s experiences.” I thoroughly enjoyed how he showed that story is personal and comes from the…

Introduction This paper evaluates resources using three pieces of literature. All three literature works are on the topic of single parent families. It focuses on the emotional, physical, and mental effects between single parents and their children. The first evaluation is an article from a website. The title is “Single-parent families” and has no author. The second evaluation is on a magazine article, “Understanding Single Parent Families” by Kirsten Schuder from Lifestyle magazine. The final…

or infant (Story & Barboza, 2007). The magnets could be swallowed and fuse together, tearing the child’s intestine (Palmeri, 2007). 17.4 million toys were recalled due to faulty magnets (Thottam, 2007). The other reason for the recall was high levels of lead based paint, a result of Mattel’s poor management of their supply…