It depends on how you use it. If an individual is using a cellphone for his/her entertainment even though the professor/teacher is having a lecture, then it is unethical. But if the individual is using his/her own phone for an emergency matter then it should be considered.
The Cretaceous-Tertiary extinction event, or the K-T event, is the name given to the die-off of the dinosaurs and other species that took place some 65.5 million years ago. For many years, paleontologists believed this event was caused by climate and geological changes that interrupted the dinosaurs’ food supply. However, in the 1980s, father-and-son scientists Luis (1911-88) and Walter Alvarez (1940-) discovered in the geological record a distinct layer of iridium–an element found in abundance only in space–that corresponds to the precise time the dinosaurs died. This suggests that a comet, asteroid or meteor impact event may have caused the extinction of the dinosaurs. In the 1990s, scientists located the massive Chicxulub Crater at the tip of Mexico’s Yucatán Peninsula, which dates to the period in question.
Dinosaurs roamed the earth for 160 million years until their sudden demise some 65.5 million years ago, in an event now known as the Cretaceous-Tertiary, or K-T, extinction event. (“K” is the abbreviation for Cretaceous, which is associated with the German word “Kreidezeit.”) Besides dinosaurs, many other species of mammals, amphibians and plants died out at the same time. Over the years, paleontologists have proposed several theories for this extensive die-off. One early theory was that small mammals ate dinosaur eggs, thereby reducing the dinosaur population until it became unsustainable. Another theory was that dinosaurs’ bodies became too big to be operated by their small brains. Some scientists believed a great plague decimated the dinosaur population and then spread to the animals that feasted on their carcasses. Starvation was another possibility: Large dinosaurs required vast amounts of food and could have stripped bare all the vegetation in their habitat. But many of these theories are easily dismissed. If dinosaurs’ brains were too small to be adaptive, they would not have flourished for 160 million years. Also, plants do not have brains nor do they suffer from the same diseases as animals, so their simultaneous extinction makes these theories less plausible.
<u><em>Jung Bahadur Rana (1903-134)</em></u>
ᴍᴜᴛɪʟᴀᴛɪᴏɴ ᴏꜰ ᴄʀɪᴍɪɴᴀʟꜱ ᴡᴀꜱ ʟɪᴍɪᴛᴇᴅ. ᴜɴᴍᴀʀʀɪᴇᴅ ɢɪʀʟꜱ, 35 ʏᴇᴀʀꜱ ᴏꜰ ᴀɢᴇ ɢᴏᴛ ʀɪɢʜᴛꜱ ᴏɴ ᴛʜᴇ ᴘᴀʀᴇɴᴛᴀʟ ᴘʀᴏᴘᴇʀᴛʏ. ʜᴇ ᴛʀɪᴇᴅ ᴛᴏ ᴀʙᴏʟɪꜱʜ ꜱᴀᴛɪ ᴀɴᴅ ꜱʟᴀᴠᴇʀʏ.
The Mayan celebrations involved rituals of bloodletting of choice animals as well as human sacrifice. where people would be killed by having their heart ripped out from the chest.
This was done to appease the gods and it was done in every celebration of every calendar be it political or religious. The most sacred was the tongue and the ear, they pierced the ear to hear from the Gods and cut the tongue to enable them to speak what they heard from Gods.
In the early 1820s suffrage was denied to women
