III. Reconstruct the following text using the words from the box to fill in the blanks. What do you think about extraterrestrial life?

occurred incompatible evidence motor frequently source solvent capable

unique orbiting possibly terrestrial star abundance rejected hypothetical

stemmed considered universe temperatures alternative things utilize

morphology panspermia carbon sustaining interior substance element

The existence of extraterrestrial life is currently (1)____; there is as yet no (2)____ of life outside the planet Earth that has been widely accepted by scientists. Most scientists hold that if extraterrestrial life exists, its evolution would have (3)____ independently in different places in the (4)____. An (5)____ hypothesis, held by a minority, is (6)____, which suggests that life in the universe could have (7)____ from a single initial point of origin, and then spread across the universe, from habitable planet to habitable planet. These two hypotheses are not mutually (8)____.

All life on Earth is based on the building block element (9)____ with water as the (10)____ in which bio-chemical reactions take place. Given their relative (11)____ and usefulness in (12)____ life it has long been assumed that life forms elsewhere in the universe will also (13)____ these basic components. However, other elements and solvents might be (14)____ of providing a basis for life. Silicon is usually (15)____ the most likely alternative to carbon, though this remains improbable. Silicon life forms are proposed to have a crystalline (16)____, and are theorized to be able to exist in high (17)____, such as planets closer to the sun. Life forms based in ammonia rather than water are also considered, though less (18)____. Nor can the possibility be (19)____ that a completely new (20)____ may be found that may react in a similar way to carbon or that wholly (21)____, non-chemical life-forms may (22)____ flourish through exotic physics.

Along with a building block (23)____ and a solvent, life also requires an energy (24)____. Energy from a parent (25)____ is the most obvious source for extraterrestrial life but this is not the only possibility, as the example of (26)____ extremophiles shows. Geothermal energy from a planet's (27)____, for instance, may drive sub-surface or oceanic life, while tidal flexing (e.g., for bodies (28)____ a gas giant) provides another possible (29)____ to sustain living (30)____.

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II. Choose the appropriate word to complete each of the following sentences	\|	IV. Reconstruct the text below putting the extracted fragments (a-i) into their correct places (1-9). Make a written translation of the text into Ukrainian

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