How has global temperatures changed over the past 100 years? Global surface temperature has been measured since 1880 at a network of ground-based and ocean-based sites. Over the last century, the average surface temperature of the Earth has increased by about 1.0o F. The eleven warmest years this century have all occurred since 1980, with […]

How does alcohol affect balance? Summary: Chronic alcoholism is often associated with a disturbed gait and balance, likely caused by alcohol damage to neural systems. While some studies have suggested that abstinence can lead to partial recovery of gait and balance functions, questions remain about duration of abstinence and sample size. Which of the following […]

How is it possible for one of the species in a mimicry relationship not to be aware of the other? They are not aware of each other because usually they are sesperate and don’t live together. What is Board in College? The term “board” refers to the meal plan, which can take many forms to […]

What develops during the fetal stage? Stages of development: During the fetal stage, the brain develops and the body adds size and weight, until the fetus reaches full-term development. Throughout the fetal stage the brain continues to grow and develop, nearly doubling in size from weeks 16 to 28. Which statement correctly describes the fetal […]

Does independent assortment occur in metaphase 1? In metaphase I, the tetrads line themselves up at the metaphase plate and homologous pairs orient themselves randomly. This variation is due to independent assortment and crossing-over during meiosis, and random union of gametes during fertilization. Does crossing over occur in metaphase? Crossing over occurs during prophase I […]

What is the name of the product used to extend the life of a floral arrangement? Oasis is a trademarked name for wet floral foam, the spongy phenolic foam used for real flower arranging. How can a floral designer provide a water source for a corsage? A device used to hold the flowers in a […]

What is the sum of all forces called? The vector sum of all of the forces acting on a body is a single force called the net force . If the net force is equal to zero, the object is said to be in equilibrium. What happens when rotational inertia increases? Objects with mass require […]

Where does the Gulf Stream flow from and to? The Gulf Stream is an intense, warm ocean current in the western North Atlantic Ocean. It moves north along the coast of Florida and then turns eastward off of North Carolina, flowing northeast across the Atlantic. Does the Gulf Stream flow clockwise? Gulf Stream rings are […]

What happened to the American chestnut tree? Mature American chestnuts have been virtually extinct for decades. The final blow happened at the turn of the 20th century when a disease called chestnut blight swept through Eastern forests. The disappearance of the chestnut launched a profound change in the structure and composition of eastern forests. What […]

What is the benefit of using a renewable resource rather than a non-renewable resource? Environmental and economic benefits of using renewable energy include: Generating energy that produces no greenhouse gas emissions from fossil fuels and reduces some types of air pollution. Diversifying energy supply and reducing dependence on imported fuels. What are the advantages of […]