What would life look like if Humans either didn't evolve to modern human or faced a massive extinction?
Q. If Humans faced a grim extinction or didn't have a chance to evolved would it affect the life on Earth and if so would there be a species that would replace the humans place as the most intelligent and power of the planet? Example: Like some german scientist thought seeing how smart a octopus is that they could evolve on land and maybe even become some form of intelligence capable of living similar to our way of living.
Asked by Kraator - Thu Nov 12 20:55:15 2009 - Biology - 5 Answers - Comments

A. there's been life for 3 billion years, and mammals for half a billion years. really intelligent life for only 200,000 and organized cities for only about 10,000 life would go on, but there would probably not be another species with the intelligence level we have today. and, there would never be another technological civilization, because we've used up all the coal and oil that were easy to reach, and those are necessary for technological development.
Answered by linlyons - Thu Nov 12 21:02:10 2009

What is the deepest humans have gone in to the earth?
Q. What is the deepest humans have gone in to the earth? I imagine it is only a fraction of a fraction of a percent of the depth... what are some of the forces and dangers humans face in very deep holes?
Asked by theheatheatwave - Wed May 11 10:02:16 2011 - Earth Sciences & Geology - 1 Answers - Comments

A. The deepest man has gone into the Earth is the Tau Tona gold mine near Pretoria in South Africa. The verticle shaft goes 3.6 Km [2.27 miles] straight down. It also has over 800 Km [497 miles] of tunnels.
Answered by - Wed May 11 10:06:53 2011

How many humans would it take to create a new world?
Q. If a group of humans of all "breeding" age were to move to a new planet with absolutely no contact with any other planet what is the number needed so that they do not start interbreeding? This is also assuming all other factors are favorable. I know I've read this answer somewhere but now I can't find it. Please help!
Asked by Tryn - Mon Jun 21 22:56:11 2010 - Anthropology - 6 Answers - Comments

A. A few hundred people would do just fine. Mother Nature prevents many of the deleterious effects of inbreeding through genetic mutation. That is the natural process responsible for genetic diversity and different races and sub-races of human beings. Over eons of time, humans become more and more genetically diverse, although our chromosomes continue to retain genetic markers showing how each of us is related to one another from our distant ancestral pasts. There is only a 3% chance of a birth defect in the product of two first cousins interbreeding. When two second cousins intermarry, the odds of birth defects are less than 1% on down the line. Within just a few generations, genes mutate considerably allowing for more and more healthy… [cont.]
Answered by ksnake10 - Tue Jun 22 17:11:20 2010

If humans stop eating animals and start eating only plants, what will all the herbivores eat?
Q. Will there be enough food, or will humans switching to a herbivore diet, cause animals to starve by taking away their food sources?
Asked by - Wed Oct 20 02:20:24 2010 - Vegetarian & Vegan - 11 Answers - Comments

A. Good Question. I do not have a clue.
Answered by - Sat Oct 23 23:08:37 2010

What is it, if anything, that makes humans a unique form of existence on planet earth?
Q. What is it, if anything, that makes humans a unique form of existence on planet earth? Is human intelligence and the use of symbols merely a more sophisticated form of characteristics found in other life forms? Or are humans so different that we we should be considered apart from nature?
Asked by nikki6589 - Fri Nov 30 13:14:49 2007 - Philosophy - 10 Answers - Comments

A. During human evolution, our forebrain became larger as our cerebral cortex increased in size. This means it had to become more folded to fit inside the skull. This gives the outside of the human brain its 'walnut' appearance. Humans have a larger cerebral cortex relative to the rest of the brain than any other animal. The cerebral cortex handles many of our unique skills, like language and problem solving." (source ) "When we compare our brain to those of other animals, the first thing that strikes us is its size. Human brains weigh on average 1,300 grams; a squirrel brain weighs six grams. Some of this difference is because, as larger animals, we need more brain to run our bodies. However, the brains of our nearest relatives,… [cont.]
Answered by Easy B Me II - Fri Nov 30 13:32:59 2007

What is the biological reason that humans want to have children?
Q. Humans have evolved to desire sex through numerous hormonal chemicals. But what mechanism exists to make humans want to have children? In general, humans desire sex but now that numerous birth control methods exist, sex is no longer necessarily tied to having children. So what biological reason makes humans want to have children, because many could have sex and no children if they so desired. And, it seems to me that such a scenario is in effect. Children per adult is decreasing in nations where the populations can easily afford a lifetime supply of birth control. But why doesn't the rate go down to zero for that group of people? Of course, I'm not advocating this, I'm just wondering why we see these results. I still don't get it: we have… [cont.]
Asked by presidentrichardnixon - Sat Mar 17 13:19:04 2007 - Biology - 13 Answers - Comments

A. Humans are still animals like all other. And while not as prevelant as other animals, biological instincts still exist. all animals have an inherent instint to mate. it is hard wired into us.
Answered by galaxy_traveller - Sat Mar 17 13:22:35 2007

Hu Ma Ns...!!!?
Q. humans always think that they are the smartest creature on earth. but at the end, they will ask back themselves why do they need to follow all these rules they've made themselves! they began the wars but at the end they ask themselves back how and why do wars happen. this is so pathetic! now humans can be considered to be the dummest creature on earth!! what do u think?
Asked by Maia - Sun May 27 21:09:21 2007 - Other - Society & Culture - 7 Answers - 4 Comments

A. *Ahem* Then you are the dumbest creature of Earth.
Answered by A - Sun May 27 21:14:09 2007

Can humans contract the parvo virus from dogs?
Q. my dog is a little over 1 year old and he has all of a sudden gotten diarrhea, and vomiting. He has had shots and been de-wormed by the lady that gave him to us. He is still eating and drinking plenty of water. We were told he may have parvo. Could this be true and can humans catch any of it? He also has green around his fur where his penis is. Is this normal? Are there any home remedies for this until we can get him to the vet?
Asked by AMBER F - Sun May 18 10:04:18 2008 - Dogs - 7 Answers - Comments

A. Yes, this sounds like Parvo is a very real possibility. If your dog has parvo, you need to get him to the vet NOW. You don't have time to ask questions on the internet. He needs treatment NOW! Parvo is such a nasty virus that even with treatment many dogs have a 50/50 shot at survival. If you wait, there is a good chance he'll be dead before he even gets treatment. please get to the vet, TELL them you think you have a possible parvo case, and ask THEM these questions when you get there.
Answered by Lioness - Sun May 18 10:10:42 2008

Are humans the only animal on the planet able to exchange intellectual ideas among eachother?
Q. I want to know if other animals can share information and ideas among eachother to build or complete a task. Example: Humans cant fly, but we have managed to put airplanes in the air. The technology we have develeloped and all that. Is there another animal that could have progressed similar to the way we have, if humans hadnt taken command of this planet?
Asked by rstrick4987 - Wed Feb 4 19:59:58 2009 - Biology - 2 Answers - Comments

A. Most cetaceans and primates are able to communicate extremely well.
Answered by astilden - Wed Feb 4 20:47:26 2009

How do humans benefit from bacteria living in the digestive system?
Q. How do humans benefit from bacteria living in the digestive system? A. Bacteria adapt to fluctuations in temperature. B. Bacteria get food and a place to live. C. Bacteria produce vitamins humans need. D. Humans make nitrogen the bacteria can use.
Asked by Leah - Mon Feb 23 16:29:24 2009 - Biology - 3 Answers - Comments

A. Even though I know the answer is C (vitamin K) look at how the rest of the answers are worded. All of the other three are benefiting the bacteria. So you can answer this question with NO knowledge of the relationship just by carefully reading the answers
Answered by Topher - Mon Feb 23 16:40:19 2009

How are humans affecting the water cycle?
Q. Water moves from ocean to air, onto land, to lakes and streams and groundwater, back to the sky and ocean, in a continuous cycle. In the past, water was considered to be a renewable resource. Today, in many parts of the world, water has become a non-renewable resource. Discuss some ways in which humans are affecting the water cycle.
Asked by Nelly J - Tue Mar 4 22:58:01 2008 - Conservation - 8 Answers - Comments

A. Humans have managed to increase areas of drought and erosion. I think they have increased ocean heat and total rain as well. More and more people seem to agree. But there are holdouts, including some scientists. People who truly understand the situation are ABLE to make accurate predictions based upon their understanding. Those who really do NOT understand, albeit they may claim to understand, are NOT able to make such accurate predictions. So, when you seen rivers cresting and floods overwhelming in the next few months, think about me and what I have said. I also have a blog: Nunitak's Weather Blog Pls note the accurate prediction of 2007--2008 Heavy Winter Snow, made well ahead of time. See the Tag Cloud, down the left margin in the blog. [cont.]
Answered by Ursus Particularies - Tue Mar 4 23:13:40 2008

What percent does humans contribute to global warming as against planktons of the seas?
Q. Since it is accepted that the Earth is 75% Water then it means 25% is land. And if 25% is land, how much of 25% is occuppied by humans that affect global warming? And upon computation of such total, how does that compare to the planktons of the seas that contribute to global warming? Is it not true that humans are arrogant enouogh to declare that they can control what naturally happens to the Earth including the cycles of climate change?
Asked by Evangelizer - Fri Mar 26 05:59:54 2010 - Global Warming - 9 Answers - 1 Comments

A. Excellent point, and certainly would be one of the parts of the equation to consider in order to find what man's true percentage of contribution of total CO2 really was. However the equation would be rather exhaustive and could only come to a close approximation at best. Many variables would need to be considered, and many 'rough' assumptions. A couple of examples would be: 1) The amount of microbial action in the earth's soil (extremely variable from location to location, and season to season etc. ) and, 2) Mammal, bird, fish, insect etc. respiration, not only variable, but you would need to estimate total populations (except humans) , which we do know, and humans produce at least 433 million tons per billion people per year, or 2.86… [cont.]
Answered by 2B or not 2B - Sun Mar 28 09:58:17 2010

How did humans evolve into needing carbohydrates for the body?
Q. During the Caveman days there were no carbs of any kind. Now people say that the body can't live without carbs. If it's true, it's only because some humans were eating foods and each generation was eating carbs and later it became the norm for the body to consume carbs. I believe earlier peoples ate meat only.
Asked by - Wed Jan 27 13:23:49 2010 - Diet & Fitness - 1 Answers - Comments

A. Glucose is the form of sugar that travels in your bloodstream to fuel the mitochondrial furnaces responsible for your brain power. Glucose is the only fuel normally used by brain cells. Because neurons cannot store glucose, they depend on the bloodstream to deliver a constant supply of this precious fuel. This blood sugar is obtained from carbohydrates: the starches and sugars you eat in the form of grains and legumes, fruits and vegetables. (The only animal foods containing a significant amount of carbohydrates are dairy products.) 1) Durring the Cave man days there were carbs found in the dairy products that the neolithic people consumed. 2) The human brain today is alot larger than it was in the cave man days, therefore; needing more of… [cont.]
Answered by Devon Ze`ro - Wed Jan 27 17:24:14 2010

When will Humans start a nuclear war over their differences in hair?
Q. Humans are exactly the types of filthy Baboon-Chimps who would nuke each other for having hair that is different.
Asked by Uncle Planet (No relation) - Thu Nov 25 14:16:58 2010 - Other - Cultures & Groups - 2 Answers - Comments

A. Whenever something is gained, something is always lost. It's difficult to live after something like that. What is lost will never return. Important things, irreplaceable things... But what is needed to keep those things is in the firm will packed into one bullet. Man knows, he knows that nothing will begin unless he speaks, and that nothing will change, unless he moves.
Answered by - Thu Nov 25 14:19:04 2010

What are humans so worried about the afterlife instead of becoming smarter?
Q. What are humans so worried about the afterlife instead of becoming smarter? If you believe in an afterlife, there is no need to become smarter. If you become smarter, you can prove/disprove an afterlife. It's selfish to just accept an afterlife; if it exists then you can prove it exists.
Asked by J L - Sat Apr 11 14:33:13 2009 - Religion & Spirituality - 8 Answers - Comments

A. If you become smarter, you can prove/disprove an afterlife. And they started to try to prove that what 6,000? 6 million years ago? Are we no smarter now? Or why hasn't either been proven? It's selfish to just accept an afterlife; if it exists then you can prove it exists. So logically speaking, it's also selfish to accept there is no afterlife. If it doesn't exist, then you can prove it
Answered by gosam777 - Sat Apr 11 14:45:24 2009

Nudity and humans, why are humans nervous to be seen by others naked?
Q. Why are humans nervous to be nude in front of another person? I dont mean naked in front of a stranger, that is understandable to be nervous. But what about romantic couples or people in a same sex locker room who are so nervous to be seen by the other(s) naked? Does this have a sociological basis?
Asked by Ms.B - Thu Oct 1 13:56:50 2009 - Sociology - 5 Answers - 1 Comments

A. It has a societal influence. Wearing clothes, although to us seems like something that every human should do, is something that is expected of the culture of which we live in. If we went to school or to work naked (pause, think, laugh) there would be chaos. However, in other cultures, its ok to be naked, because within their society, it is not expected for people to wear clothes (or they just cant afford it, indigenous people for instance). But I think that, for instance if there were a generation of people raised on a deserted island, and they were all naked, no one would be ashamed of one another.
Answered by cmletamendi - Thu Oct 1 14:20:26 2009

How have humans had an impact on the animals and plants in the Daintree?
Q. How have humans had an impact on the animals and plants in the Daintree?
Asked by - Mon Jun 8 20:00:49 2009 - Biology - 1 Answers - Comments

A. There has been some total clearing of the rainforest. There has been some logging. There are roads put in that: help weeds to invade, open up the canopy increasing light that changes what can live there, open up the canopy causing water loss that changes what can live there, cause a lot of erosion that damages the fringing reef. Spread a lot of pollutants Fed themselves to the crocodiles / got angry and killed the crocodiles Caused rapid climate change which threatens immediately greater storm damage and then . . . who knows?
Answered by DrDontheTermiteGuy - Tue Jun 9 00:59:19 2009

How come humans dont eat dog food, but dogs will eat dog and human food?
Q. I mean ya some dog food is alright, but how come dogs will basically eat anything either dog or human food, but humans will only eat human food?
Asked by Mike - Tue Jul 22 13:49:48 2008 - Dogs - 5 Answers - Comments

A. Dogs will also eat poop...and I don't know about you,but I don't find that appealing at all. Humans are a higher species (well they should be, I've met some people that make me wonder!) and use all 6 senses to enjoy their food. Eating for us isn't based on survival anymore, especially if you're american. It's become one of our favorite past times! Dogs eat to survive. If it looks edible, they try it.
Answered by Randee - Tue Jul 22 13:54:18 2008

If humans are conductors of electricity, is it possible to manipulate that electricity?
Q. Obviously it would be impossible for a conductor to generate the energy, but is it possible for a conductor to manipulate that energy? It's my understanding that a conductor can transmit the energy it is conducting across a surface, so why not electricity? Does this have to do with the fact humans are not pure conductors of electricity? Or is it indeed possible?
Asked by - Tue Apr 26 15:11:38 2011 - Other - Science - 2 Answers - Comments

A. The problem is that the nervous system doesn't conduct electricity like wires do. Wires conduct electricity by allowing electrons to flow down their length. Nerves, on the other hand, don't use this method. Instead, they generate what is called an action potential. Think of a nerve as a hollow tube. There are little protein pumps that bridge the tube from the outside to the inside. They use energy to pump sodium and potassium ions (charged atoms) across the tube, creating an artificial imbalance. Sodium wants to flow into the cell, and potassium wants to flow out. Its the charges of these ions that sets up the electrical imbalance - the voltage - across the membrane of the cell. When the neuron fires, channels across the membrane (similar… [cont.]
Answered by andymanec - Tue Apr 26 17:08:26 2011

How Can Humans Be Inequal and Yet Maintain Equal Rights?
Q. My boyfriend disclosed today that he does not believe people to be born equal and yet believes all to possess equal rights. How can this be possible? If I am superior to another, why are my rights not of more importance than his? And if another is superior to me, how can my rights be equal to hers? This makes no sense to me. Understand that when I say that all humans are born equal, I do not mean that all humans are born the same. Human equality means a level worth, not identical individual characteristics. So if a man believes himself to be better than some and worse than others, how can he maintain a philosophy of equal rights which is naturally based upon the assumption that all humans are created equal? I understand that the *choices*… [cont.]
Asked by ohevshalomel - Tue Sep 11 16:58:35 2007 - Philosophy - 9 Answers - Comments

A. Sorry to say but your delusional. Your philosophy is based on ego and that needs correction.
Answered by catlady - Tue Sep 11 17:05:59 2007