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„Pancake ice” w dosłownym tłumaczeniu oznacza lodowe naleśniki. Takie struktury tworzą się podczas zamarzania wody morskiej, niekiedy także rzecznej.
W powiększeniu – piękne, skonsumowane…
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Praca paleontologów w terenie
Paleontolodzy to naukowcy, którzy zajmują się badaniem skamieniałości, czyli wszelkimi śladami życia na Ziemi zachowanymi w skałach. Mogą nimi być szczątki zwierząt, tropy, odciski, a nawet skamieniałe odchody. Jak zatem wygląda ich praca?
Silne trzęsienie ziemi w Chile –…
Pierwszego kwietnia 2014 o godz. 23:46 (UTC), czyli w Polsce już drugiego kwietnia o 1:46 doszło do silnego trzęsienia ziemi u wybrzeża Chile. Magnituda wstrząsu wynosiła 8,2 w otwartej skali magnitudy momentu sejsmicznego – według USGS (United…
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inter-ideograph"><span style="mso-fareast-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman"">Rycina przedstawiająca pokrzywę
zwyczajną </span><a href="http://pl.wikipedia.org/wiki/Plik:Illustration_Urtica_dioica0_clean.jpg"><span style="mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"">http://pl.wikipedia.org/wiki/Plik:Illustration_Urtica_dioica0_clean.jpg</span></a><span style="mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"">
(rycina pochodzi z książki </span>Prof. Dr. Otto Wilhelm Thomé <i>Flora von
Deutschland, Österreich und der Schweiz</i> 1885, Gera, Germany)<span style="mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman""></span></p>
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Zapomniane oblicze pokrzywy
Pokrzywa zwyczajna (Urtica dioica L.) to jedna z tych roślin, którą poznajemy już we wczesnym wieku i to najczęściej od tej nieprzyjemniej strony. Swędzenie, zaczerwienienie, wysypka to częste efekty spotkania z pokrzywą.