What are the four principles of stratigraphy? Steno’s laws of stratigraphy describe the patterns in which rock layers are deposited. The four laws are the law of superposition, law of original horizontality, law of cross-cutting relationships, and law of lateral continuity. Nicolaus Steno was a 17th-century Danish geologist. Which kind of unconformity is probably the […]
What are the three roles of bacteria?
What are the three roles of bacteria? In summary, bacteria are single-celled microbes without a nucleus. Bacteria play many roles in our ecosystem. Bacteria are decomposers which break down dead material and recycle it. They also can be producers, making food from sunlight, such as photosynthetic bacteria, or chemicals, such as chemosynthetic bacteria. What are […]
Why is it called Bicarb?
Why is it called Bicarb? 1 Answer. The prefix bi in bicarbonate comes from an outdated naming system and is based on the observation that there is twice as much carbonate (CO3) per sodium in sodium bicarbonate (NaHCO3) as there is in sodium carbonate (Na2CO3). Is sodium bicarbonate the same as baking soda? Baking soda […]
Does the Earth accelerate towards you?
Does the Earth accelerate towards you? Earth accelerates towards you So the mass of the Earth relative to you is incredibly large. From Newton’s second law of motion we know that for a given force on an object the acceleration reduces as the mass of the object increases. However the Earth still accelerates towards you […]
What happens if the brain does not maintain homeostasis?
What happens if the brain does not maintain homeostasis? What happens if there’s disruption? If homeostasis is disrupted, it must be controlled or a disease/disorder may result. Your body systems work together to maintain balance. If that balance is shifted or disrupted and homeostasis is not maintained, the results may not allow normal functioning of […]
Why are unit tests useless?
Why are unit tests useless? Unit tests ossify the internal structure of the code. All the unit tests are suddenly rendered useless. Some test code may be reused but all in all the entire test suite has to be rewritten. This means that unit tests increase maintenance liabilities because they are less resilient against code […]
What is the name of K+ ion?
What is the name of K+ ion? potassium Why is potassium K+? The name is derived from the english word potash. The chemical symbol K comes from kalium, the Mediaeval Latin for potash, which may have derived from the arabic word qali, meaning alkali. What is the symbol for beryllium? Be Is Potassium a negative […]
What is an investigation that is controlled?
What is an investigation that is controlled? A controlled experiment is a scientific test that is directly manipulated by a scientist, in order to test a single variable at a time. This group is referred to as the control group, and allows for comparison with the other group, known as the experimental group. What are […]
What is the oldest commercial still running?
What is the oldest commercial still running? Discount Tire commercial What is the longest TV show in history? The Simpsons Who is the highest paid commercial actor? Jonathan Goldsmith became the ever famous ‘Most Interesting Man In the World’ in 2006. He stands as one of the highest net worth commercial actors at around $8 […]
What are the different stimuli?
What are the different stimuli? excited by three types of stimuli—mechanical, thermal, and chemical; some endings respond primarily to one type of stimulation, whereas other endings can detect all types. Chemical substances produced by the body that excite pain receptors include bradykinin, serotonin, and histamine. What are some examples of stimuli? Stimuli include: Irritants. Sights. […]