Why is the total volume of water and alcohol less?

Why is the total volume of water and alcohol less? When water and ethyl alcohol mix, several forces come into play. First, between the water and ethyl alcohol is strong hydrogen bonding that draws the different molecules close together. The 2 different molecules pack closer together than in pure solution, resulting in a reduction of […]

What implements the Comparable interface?

What implements the Comparable interface? Since the Member class implements the Comparable interface, it is possible to sort the list by using the sorted method. In fact, objects of any class that implement the Comparable interface can be sorted using the sorted method. What method must a class contain to implement the comparable interface? For […]

Where did Hagrid get his dragon form?

Where did Hagrid get his dragon form? Norbert is a Norwegian Ridgeback dragon that Hagrid had acquired as an egg from a mysterious, hooded stranger in the Hog’s Head, who turned out to be Professor Quirrell. How did Quirrell get the dragon egg? Quirrell got one step closer to stealing the stone midway through spring. […]

How many tourists visit Golden Gate Bridge?

How many tourists visit Golden Gate Bridge? 10 million visitors How much money does it cost to cross the Golden Gate Bridge? Crossing the Golden Gate Bridge will cost as much as $9 for drivers starting Thursday. Tolls for two-axle vehicles will increase from $7.70 to $8.05 for FasTrak users; from $8.40 to $8.60 for […]

What is greenfield and brownfield land?

What is greenfield and brownfield land? Put simply, brownfield land is a site that has been previously built on, which is why this is usually located in an urban area. Greenfield land is a site that hasn’t been built on – usually in a rural or countryside area. What’s the difference between green and brown […]

How fast are animals going extinct?

How fast are animals going extinct? Regardless, scientists agree that today’s extinction rate is hundreds, or even thousands, of times higher than the natural baseline rate. Judging from the fossil record, the baseline extinction rate is about one species per every one million species per year. How many species have gone extinct over the past […]

What cultural adaptations do you think may have allowed H erectus to migrate into temperate zones?

What cultural adaptations do you think may have allowed H erectus to migrate into temperate zones? Exercise 4 What cultural adaptations do you think may have allowed H. erectus to migrate into temperate zones? Better tool technology, clothing/animal skins, better hunting technology (ability to follow herds), controlled fire for warmth, language or at least advanced […]

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