2006-07-30 18:01:41 · 13 answers · asked by rekha c 3 in Science & Mathematics ➔ Other - Science
It's adaptation, not evolution. Evolution has to do with one species becoming another. We aren't as humans changing species, we're just healthier now due to more abundant food, shelter, and health care, and a lot less natural predators preying on us.
2006-07-30 23:22:44 · answer #1 · answered by Just David 5 · 1⤊ 1⤋
They are not always bigger than earlier generations. In some countries people 50-100 years back were taller and had more weight than today. They had the solid mass and more energy as compared to man with a lot of mass and lesser energy today. The excessive mass seems to have been polluted by a number poisionous substances and gases. There is a possibility that man may turnout to be more posinous than snakes as a result of genetic changes caused by prevalence of evil thoughts on human mind and environmental pollution.
2006-07-30 18:55:02 · answer #2 · answered by bainsal 2 · 0⤊ 0⤋
No, its our improved health and diet. The organic industry would have us revert to technologies that existed over 100 years ago. You can easilly predict what the results would be based on the past. In spite of all the scare stories about modern farming we are living much healthier and longer lives than 100 years ago.
2006-07-30 18:20:07 · answer #3 · answered by uselessadvice 4 · 0⤊ 0⤋
No, evolution takes thousands of years, it just that shorntess is a recessive traits unlikes being tall so tall is canceling out short.
2006-07-30 18:07:22 · answer #4 · answered by nathan b 2 · 0⤊ 0⤋
No, there aren't enough generations to make that kind of change. It's better diet (especially during youth) and lifestyle and fewer diseases; these things are all consequences of science and technology, from better public health (sanitation and water) to improved agriculture to better medical care.
2006-07-30 18:07:34 · answer #5 · answered by Mark V 4 · 0⤊ 0⤋
No its how much they eat or excercise now and before. Evolution is a slow process, so nobody is sure if it happened yet. cant wait for mutation, if it happens while im still living.
2006-07-30 18:06:25 · answer #6 · answered by Jac 3 · 0⤊ 0⤋
100 years isn't a long time for genetics to change people significantly.
It's most likely diet, better health, immunizations, etc. that have lead to increased size, height, and life expectancy.
2006-07-30 18:06:28 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Yes. That and our diets. Also we are living much longer, we are healthier (as a rule) it is not a bad thing
2006-07-30 18:05:03 · answer #8 · answered by curiositykillsthecat 4 · 0⤊ 0⤋
No better nutrition and medical care are the culprits.
2006-07-31 03:23:21 · answer #9 · answered by corvis_9 5 · 0⤊ 0⤋
No, better nutrition. We have a more reliable source of food now.
2006-07-30 18:08:42 · answer #10 · answered by Randy G 7 · 0⤊ 0⤋