What 3 things does a fire need? Oxygen, heat, and fuel are frequently referred to as the “fire triangle.” Add in the fourth element, the chemical reaction, and you actually have a fire “tetrahedron.” The important thing to remember is: take any of these four things away, and you will not have a fire or […]
What happens when the bond between the second and the third phosphate is broken?
What happens when the bond between the second and the third phosphate is broken? The chemical bond between the second and third phosphate groups is a high energy bond. When that bond is broken, energy is released, producing ADP (adenosine diphosphate). During cellular respiration, ATP is produced by the addition of a third phosphate group […]
What did Lewis and Clark spend most of their time doing?
What did Lewis and Clark spend most of their time doing? What did Lewis and Clark spend most of their time doing? Clark spent most of his time on the keel boat charting the course and making maps while Lewis often ashore studying the rock formations soil animals and plants along the way. Captains Meriwether […]
Does aluminum foil trigger metal detectors?
Does aluminum foil trigger metal detectors? Will aluminum foil set off a metal detector? Aluminum foil will block the x-rays that the postal service uses. But most metal detectors won’t notice the aluminum foil. How do you hide things from a metal detector? How do you hide things from a metal detector? Wrap the object […]
What is the purpose of the mirror in the camera obscura?
What is the purpose of the mirror in the camera obscura? The drawing above illustrates the workings of the Camera Obscura: In a dark room, the light from the world outside is directed by a mirror through a lens, which focuses the light on to a leveled surface. Often made of white stone, the surface […]
Is skin color a single gene trait?
Is skin color a single gene trait? A polygenic trait is one whose phenotype is influenced by more than one gene. Traits that display a continuous distribution, such as height or skin color, are polygenic. Which genes have the same alleles? An organism in which the two copies of the gene are identical — that […]
Why is weather changing so much?
Why is weather changing so much? Extra greenhouse gases in our atmosphere are the main reason that Earth is getting warmer. Greenhouse gases, such as carbon dioxide (CO2) and methane, trap the Sun’s heat in Earth’s atmosphere. It’s important that we monitor CO2 levels, because too much CO2 can cause too much warming on Earth. […]
Does the sun have energy?
Does the sun have energy? The sun’s energy comes from within the sun itself. The sun generates energy from a process called nuclear fusion. During nuclear fusion, the high pressure and temperature in the sun’s core cause nuclei to separate from their electrons. Hydrogen nuclei fuse to form one helium atom. Why can the moon […]
Which country has freshest water?
Which country has freshest water? Brazil Which country has the least water? Eritrea: 80.7% lack basic water services. Papua New Guinea: 63.4% lack basic water services. Uganda: 61.1% lack basic water services. Ethiopia: 60.9% lack basic water services. Somalia: 60% lack basic water services. Angola: 59% lack basic water services. Democratic Republic of the Congo: […]
Why is it important to have genetic diversity?
Why is it important to have genetic diversity? Genetic variation is an important force in evolution as it allows natural selection to increase or decrease frequency of alleles already in the population. Genetic variation is advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the […]