Characteristics of living organisms

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insulated enormous rainforests radiate mates vessels bill

The toco toucan (Ramphastos toco), which hangs out in the canopies of tropical ................... in South America, sports the largest ....................l relative to body size of any bird, making up about one-third of the toucan's body length of about 64 cm.

Researchers have puzzled for centuries over the bill's possible purpose, suggesting it might be used to attract...................... or to get fruit. The new study doesn't solve the case of the ........................... bill, but the results suggest one possible function — to regulate body temperature. The toucan bill is giant, meaning it has a large surface area over which to ..................... heat; it's not ......................... with feathers or other heat-trapping material; and it is equipped with a network of blood ............................ for dumping or absorbing heat.

Четырехкамерное сердце, измененные передние конечности, острое зрение, яйца покрытые скорлупой, обоняние, диапазон слуха, вымерший вид, ископаемые останки, неограниченной распространение, значительные различия, способность летать, врожденное поведение, уход за перьями, различимый звук, тревожные нотки, немузыкальные звуки, тщательно разработанный ритуал ухаживания, щелканье клювом, разлагающаяся растительность.

Аll living organisms, whether they are single-celled, many-celled, plants or animals, do the following things:

They may take in solid food as animals do, or digest it first and absorb it later like fungi do, or build it up for themselves like plants do.	respire
They take in oxygen and give out carbon dioxide. This exchange of gases takes place between the organism and the air or between the organism and water. The oxygen is used for respiration.	reproduce
They break down food to obtain energy. Most organ­isms need oxygen for this.	grow
Respiration and other chemical changes in the cells produce waste products such as carbon dioxide. Living organisms expel these substances from their bodies in various ways.	feed
Bacteria and single-celled creatures increase in size. Many-celled organisms increase the numbers of cells in their bodies, become more complicated and change their shape as well as increasing in size.	breathe
Single-celled organisms and bacteria may simply keep dividing into two. Many-celled plants and animals may reproduce sexually or asexually.	respond
The whole animal or parts of plants respond to stimuli.	move
Most single-celled creatures and animals move about as a whole. Fungi and plants may make movements with parts of their bodies.	excrete

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