Polecamy Artykuły Nowości
Geologiczne wakacje
Czas wakacji to czas przygód. Geologia, to również przygoda :)
Co niedźwiedzie polarne robią zimą…
Czym niedźwiedzie grzeją w zimowych legowiskach? Dlaczego nie biegają, żeby się rozgrzać? Dlaczego nie marzną im łapy?
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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.
Ostatnie trzęsienie ziemi w Pols…
Na początku tego roku, 6. stycznia, około godziny 16:30 został odnotowany wstrząs w okolicach Jarocina. Epicentrum wstrząsu znajdowało się w okolicach Żerkowa, a magnituda wstrząsu wynosiła około 3.9.
Co ma tundra do dwutlenku węgla?
Tundra to przykład biomu, czyli obszaru o określonym świecie roślinnym i zwierzęcym w danej strefie klimatycznej. Występuje głównie na półkuli północnej na obszarze Arktyki i pokrywa ok. 20% powierzchni Ziemi.