Showing posts with label leaves. Show all posts
Showing posts with label leaves. Show all posts

Koala Needs a Bath

Koala needs a bath
"I have't bathed for a week!"
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Tys Country

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BEAR NEEDS A BRUSH
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Cat No See Leaves - snicker!

Whimpy cat is roughed up leaves.
"Aaaaaah!  Help me Mom."
Funny Animal Pictures
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LEAVES STOP CUB VISION
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Plant Chemistry Indicates a Very Hot Future

Chemistry: Stomata on plant leaves shows the way to predict climate change.
It looks like the future is going to be very hot - in Asia at least. Oddly it will not get drier. With more carbon around plants will not need as much water, so grass will grow everywhere. A 5 degree rise in temperature is expected by mid-century. High humidity will make life unbearable..
Stomata on plant leaves
Plants have a significant effect on the climate in general. This has been ignored in the past. Scientists are now examining it. More efficient use of water means less water in the atmosphere which increases temperature during the day.  Spring will arrive earlier as the climate itself changes.

A study of stomata, tiny spores on leaves involved in carbon dioxide absorption and the shedding of water, has provided information on how plants affect the weather. It was initially for understanding how plants work, but it has ultimately been applied to the study of climate change.
 Chemistry bny Ty Buchaan 
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Koalas Know What to Eat

Koalas may look dozy and stupid. However, they are really smart. Nature has given them a strong identification for what is good to eat. The nutritional quality of eucalyptus leaves determines the koala population in a given area.

Koalas need nitrogen to make energy, though they move very slowly. Without this valuable mineral they would simply not survive. Eucalyptus trees also contain toxins, a potential death threat to the animal.

Eight species of eucalyptus were tested. It was found that koalas stayed away from trees carrying toxins and were attracted to those high in nitrogen.  They obviously know what is good them.  The search for food dominates their lives.

If this identification of superior food is true for koalas it must be the case for other animals. They are intrinsically guided to sources of higher quality food. Dogs for example do know which type of grass to eat to solve a health problem. It is unusual for dogs to eat grass, but sometimes they do.

If good food is scarce which it is in Australia, it is logical that sensory systems of animals would evolve to identify sources of better nutrition. In the future, environmentalists should examine the quality of food in a habitat before re-introducing endangered animals.  The carrying capacity of the environment affects its carrying capacity.
Science by Ty Buchanan
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Sneeze Dog

"I am not going to sneeze."
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Monkey Overeat Like Humans but the Animals Do Not Get Fat

Monkeys, like humans, overeat. Monkeys gorge themselves on low protein fruit. Extremely large quantities are ingested which could lead to an increase in body fat. Food intake for monkeys is tied to the level of protein in food. If food has a high protein level they will eat less of it before feeling full.

Shoots and leaves have a high protein level. So they eat less of these to obtain their daily intake of 12 grams of protein. The reason that eating fruit does not make them fat is that it takes a lot of energy to obtain the fruit.

In Western countries we seek high carbohydrate food because we are trying to satisfy our craving for protein. The conclusion has been reached by scientists that human obesity began 40,000 years ago when people substituted meat with crude bread made out of wild grain. Humans have become fatter as easier ways of harvesting grains have developed.
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Evolution

Male Bowerbird Grows Tomatoes

The bowerbird is unusual to say the least.  A fancy structure is built by the male to attract females.  It is an arch of still growing undergrowth with a walk through from one side to the other.  In the middle and to one side is a collection of leaves, fruit, shells, dead insects and odd glistening objects manufactured by humans.

When a female is in range the male "screeches" at the female to make her look at his handiwork. Males often wave fruit at females.  The male stays in the area of the bower for up to ten years so he has an investment in that location.  Researchers have found that males do not just pick up fruit laying around.  The spotted bowerbird actually grows his own fruit.

As the male tends to his "plot" he throws out dried fruit of the bush tomato and clears the ground, thus leaving healthy seeds to sprout and grow into bushes.  The area around the bower is full of bushes in fruit with tomatoes.  This symbiosis is part of the bowerbird mating game.
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Ornithology

Preserved Leaves Found in 500 Year Old Bible

Information about the climate five centuries ago has come to light from leaves found in an old Bible. Susana Melo de Howard was returning the 1540 Great Bible back into its humidity-controlled room when she saw the preserved leaves. The book is kept at the University of Western Australia. It came from the monastery of Ely Cathedral in England and was the first English translation of the Bible. William Tyndale was executed in Belgium for this "crime".

The West Australian university got the book at the bargain price of $500 in 1977. No one had viewed the Bible in the last twenty years. Detective work began on the leaves as soon as they were found.

By sending photographs of the leaves to academic centers all around the world, they were identified as Wych elm which was common in England 500 years ago. Carbon dating showed the leaves were placed in the Bible in the 1560s. Nitrogen was high on wetland farms in those days. Mercury, chromium and arsenic pollution was also present. Selenium was there which indicated that coal was not in general use. Lead probably from the cathedral roof was in the leaves, as well as gold and silver, common ingredients of ink at that time.
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Literature