(I) Scientists extracted air bubbles trapped in a 60,000-year-old ice core to reveal how past atmospheric composition shifted with climate change. (II) Since methane concentrations fluctuated dramatically between glacial and interglacial periods, analysing them could help researchers forecast future greenhouse gas trends. (III) However, this window into Earth's atmospheric history is rapidly closing as melting glaciers destroy the ancient ice cores. (IV) Many research stations in polar regions also study wildlife populations such as penguins and seals. (V) Consequently, we are losing a vital resource for understanding climate change before it can be fully studied.
Neden?
Paragrafın konusu, buz çekirdeklerinin geçmiş atmosferi okumaya yaraması ve erimeyle bu kaynağın yitirilmesidir. Kutup istasyonlarının penguen ve fok gibi yaban hayatını da incelediğini söyleyen cümle bu zincirin dışında kalır ve 'consequently' ile gelen sonucu hazırlamaz.
PARALLEL BASE · Q77