Uzupełnij luki w zdaniach słowami z ramki : 1. Water consists of two chemical ......................: oxygen and hydrogen. 2. Burning is an example of a chemical ...................... . 3. ................. are used to protect our health. 4 . the

Uzupełnij luki w zdaniach słowami z ramki : 1. Water consists of two chemical ......................: oxygen and hydrogen. 2. Burning is an example of a chemical ...................... . 3. ................. are used to protect our health. 4 . the ................ for the area of a circle is πr² 5. Human body has about 100 trilion ......................... 6 . ................ like bacteria cause many diseases 7 ...................... is one of the most dangerous diseases. 8. the smallest bit of any substance is a ....................... ramka: -cancer - cells -elements -formula -germs -monecule -reaction -vaccines