Choose any of the following ideas (or propose your own), find additional information and write an essay (150-250 words).

Ants can lift and carry more than three times their own weight. Why?

Do you know the difference between insects and spiders? If no – find out.

Why is insects` blood green, yellow or colorless?

What ideas do most people have about insects? Why do you think they feel this way?

Discuss the pros and cons of organic versus chemical insect controls.

 

Unit 5

Тема урока: Fishes текст 1 Fish текст 2 Flying fish текст 3 White sharks текст 4Фрагмент из книги Дэвида Аттенборо " Мадагаскарские диковины"

Words

1.	range	n. the area over which a plant or animal is distributed
2.	fin	n. one of the thin body parts that a fish uses to swim, flipper
3.	scale	n. one of the small flat pieces of skin that cover the bodies of fish, snakes etc
4.	diverse	adj. very different from each other
5.	apply	v. to use something such as a method, idea, or law in a particular situation, activity, or process
6.	share	n. the part of something that you own or are responsible for v. to have or use something with other people
7.	feature	n. a part of something that you notice because it seems important, interesting, or typical
8.	gill	n. one of the organs on the sides of a fish through which it breathes
9.	slit	n. a long straight narrow cut or hole
10.	supply	v. to provide with something needed or wanted
11.	overlap	v. if two or more things overlap, the edge of one thing covers the edge of the other
12.	broad	adj. having a distance larger than usual from side to side; wide
13.	alteration	n. a small change that makes someone or something slightly different, or the process of this change
14.	curb	v. to control or limit something in order to prevent it from having a harmful effect
15.	otherwise	adv. in a different way, apart from that
16.	unfamiliar	adj. not known to you
17.	provide	v. to give something to someone or make it available to them, because they need it or want it, to supply
18.	indulge	v. to let yourself do or have something that you enjoy, especially something that is considered bad for you

 

Make sure you know these words

1.	operculum (pl. opercula)
2.	cartilaginous
3.	dorsal

What fish are they?

perch
shark
trout
pike
salmon
herring
flounder
puffer
lamprey
hagfish
eel

Working with words

Look at the picture and label parts of the fish.

 

Word building.

noun	verb	adjective
		diverse
dependency
alteration
		challenging
	to apply
	to be ready
	to be able
behaviour

 

3.Add one of these prefixes dis-, un-, in-, ir- to each of these words to make opposites and insert them in the sentences of your own.

appear, familiar, vertebrate, dependent, important, to cover, natural, regular

 

Choose the correct word to complete the sentences.

fins aquatic habitat flattened vary evolved existence gill

Fishes have been in ......................... for more than 450, 000, 000 years, during which time they have ........................... to fit into almost every type of ..................... The popular conception of a fish as a slippery, streamlined aquatic animal that possesses fins and breathes by ................... supplies to many fishes, but far more fishes deviate from that conception than conform to it. For example, the body is elongate in many forms and greatly shortened in others; the body is.......................... in some (principally in bottom-dwelling fishes) and laterally compressed in many others; the ...................... may be elaborately extended, forming intricate shapes, they may be even lost; and the positions of the mouth, eyes, nostrils, and gill openings .............................. widely.

 

Working with word combinations and sentences

Give English equivalents of the following word combinations.

Пресная вода, многочисленные и многообразные виды, определенные черты, жаберные щели, паразитический образ жизни, хрящевые рыбы, костные рыбы, находящие друг на друга пластины, огромная важность, очевидная причина, запас продуктов, неисчерпаемый источник, изменение окружающей среды, личинка москита, заболевание, переносимое москитами, привыкнуть к неволе, держать рыбок, создавать трудности.

 

Match the words (1-7) to their definitions (a-g). Write your own sentences with these words.

A		B
	obvious	a	something that needs a lot of energy or skill to deal with
	to realize	b	able to change easily
	flexible	c	begin to understand something
	challenge	d	clear to understand
	distinct	e	an important part or aspect of something
	feature	f	to use or have smth at the same time as someone else
	to share	g	separate and different

 

Match the beginnings and endings of the sentences.

 

	By far one of the most colorful and diverse groups of animals in the sea is	A	helping a fish to go unseen.
	And although they may be beautiful to behold,	B	for the home aquarium.
	Red colors appear black under water,	C	there is a real function behind each of these designs.
	Stripes allow a fish	D	to confuse a would-be predator.
	Spotted patterns serve	E	deals with survival in its own way.
	Each species of fish	F	when referring to many different species at once.
	Most of these species are suitable	G	that of the coral reef fishes.
	It is perfectly acceptable to use the term " fishes"	H	to camouflage itself against the coral.

 

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