The national anthem of the republic of uzbekistan

Numeral + teen	20-twenty 21- twenty one 22- twenty two and etc. 30- thirty 40- forty 50- fifty 60- sixty 70- seventy 80- eighty 90- ninety Numeral + ty
100-a (one) hundred 101- a (one) hundred and one 102- a (one) hundred and two and etc. 200- two hundred 300- three hundred 400- four hundred and etc. 1000- a (one) thousand 1001- a (one) thousand and one 1250- a (one) thousand two hundred and fifty 2000- two thousand 2001- two thousand and one
2235- two thousand two hundred and thirty-five; 3.000- three thousand; 4.000- four thousand; 100.000- a (one) hundred thousand; 1.000.000-a (one) million; 1.000.000.000- a (one) milliard (English), a (one) billion (American)

Ordinal numerals

1^st -12^th	13^th -19^th	20^th -90^th	100^th and other ordinals
1^st -first 2^nd -second 3^rd –third 4^th -fourth 5^th -fifth 6^th -sixth 7^th -seventh 8^th –eighth 9^th -nineth 10^th -tenth 11^th -eleventh 12^th -twelfth	13^th -thirteenth 14^th - fourteenth 15^th -fifteenth 16^th - sixteenth 17^th -seventeenth 18^th - eighteenth 19^th -nineteenth	20^th -twentieth 21^st – twenty-first 22^nd - twenty- second 23^rd - twenty- third and etc. 30^th - thirtieth 40^th - fortieth 50^th - fiftieth 60^th - sixtieth 70^th - seventieth 80^th - eightieth 90^th - ninetieth	100^th - hundredth 101^st - hundred and first 102nd- a (one) hundred and second and etc. 200^th - two hundredth 300^th - three hundredth 400^th - four hundredth and etc. 1000^th - thousandth 1001^st - thousand and first 1002^nd - thousand and second 2000^th - two thousandth 2003^rd - two thousand and third 1.000.000^th - millionth

LESSON 16 Biology

Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth, origin, evolution, distribution, and taxonomy. Biology is a vast subject containing many subdivisions, topics, and disciplines (fan tarmoqlari). Among the most important topics are five unifying principles that can be said to be the fundamental axioms of modern biology. They are :

1. 
   Cells are the basic unit of life
   
2. 
   New species and inherited traits are the product of evolution
   
3. 
   Genes are the basic unit of heredity (nasl)
   
4. 
   An organism regulates its internal environment to maintain a stable and constant condition
   
5. 
   Living organisms consume and transform energy.
   

Subdisciplines of biology are recognized on the basis of the scale at which organisms are studied and the methods used to study them: biochemistry examines the rudimentary chemistry of life; molecular biology studies the complex interactions of systems of biological molecules; cellular biology examines the basic building block of all life, the cell; physiology examines the physical and chemical functions of the tissues (to’qima), organs, and organ systems of an organism; and ecology examines how various organisms interact and associate with their environment.
Biology deals with the study of the many varieties of living organisms.
The term biology is derived from the Greek word bios, "life" and the suffix -logia, "study of." It appears in German (as biologie) as early as 1791, and may be a back-formation from the older word amphibiology (meaning the study of amphibians) by deletion of the initial amphi-. Although biology in its modern form is a relatively recent development, sciences related to and included within it have been studied since ancient times.