Xem 1-3 trên 3 kết quả Salt gland
  • Beginning birdwatchers face many frustrations: birds, it seems, are constantly in motion, taking flight before the fledgling birder can turn to a photograph or drawing that might help pinpoint its identification. The experienced birdwatcher, Edward Cronin writes in this friendly manual, is by contrast able to identify a dozen species in a few seconds, which compounds the beginner's lack of self-confidence. Never fear, Cronin reassures us: The "magician's trick of rapidly identifying species is, in truth, based on a logical procedure that anyone can master.

    pdf233p coeus75 29-01-2013 24 4   Download

  • A scientist might call it an oviparous vertebrate. It could be a lifer for a twitcher, or a control for a ringer. It might be drumming or jugging, ina trip or a wisp. You could split it, dip out on it, or even cause it to explode. It is, of course, a bird. Birdwatchers' language is a mixture of science and slang. You might well hear nictitating membrane and marsh cowboymentioned in almost the same breath. If you read about or talk about birds you are bound to meet expressions like these, but discovering their precise meanings can be remarkably difficult.

    pdf156p coeus75 29-01-2013 14 3   Download

  • Cushing's Syndrome is a disease caused by an excess of cortisol production or by excessive use of cortisol or other similar steroid (glucocorticoid) hormones. Cortisol is a normal hormone produced in the outer portion, or cortex, of the adrenal glands, located above each kidney. The normal function of cortisol is to help the body respond to stress and change. It mobilizes nutrients, modifies the body's response to inflammation, stimulates the liver to raise the blood sugar, and it helps control the amount of water in the body.

    pdf5p truongthiuyen1 08-06-2011 39 5   Download

Đồng bộ tài khoản