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Questions and Answers

What is the language used in the text?

Arabic
Urdu (correct)
English
French

What is the website mentioned in the text?

www.pdfreebooks.pk
www.bookspdfree.pk
www.freebookspdf.com
www.pdfbooksfree.pk (correct)

What is the repeated phrase in the text?

1 $
e st
Courtesy www.pdfbooksfree.pk (correct)
www.pdfbooksfree.pk

What type of content is likely available on the website?

PDF books (D) Signup and view all the answers

When did the origin of bacteria date back to?

The origin of bacteria dates back approximately 3.5 billion years. Signup and view all the answers

What type of environment did early bacteria thrive in?

Early bacteria were anaerobic, thriving in an environment devoid of oxygen. Signup and view all the answers

What crucial processes were performed by archaebacteria in shaping the Earth's environment?

Archaebacteria were crucial in shaping the Earth's environment through processes such as photosynthesis and nitrogen fixation. Signup and view all the answers

In what kind of environments can bacteria adapt?

Bacteria can adapt to a wide range of environments, from extreme conditions like hot springs and deep-sea vents to more common habitats like soil and the human body. Signup and view all the answers