What did the biology experiments on the Viking landers discover? A. Although Mars's soil is chemically active, it does not contain obviously active micro-organisms. B. The soil on Mars has much more microbial life in it than a typical soil on the Earth does. C. Small, nearly microscopic plants are common in the Martian soil. D. Although there does not appear to be life on Mars today, the soil is full of microscopic fossils.

What did the biology experiments on the Viking landers discover? A. Although Mars's soil is chemically active, it does not contain obviously active micro-organisms. B. The soil on Mars has much more microbial life in it than a typical soil on the Earth does. C. Small, nearly microscopic plants are common in the Martian soil. D. Although there does not appear to be life on Mars today, the soil is full of microscopic fossils.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter18: Life's Origin And Early Evolution

Section: Chapter Questions

Problem 1SA: An abundance of___________ in Earths early atmosphere would have prevented the spontaneous assembly...

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Which of the following steps has not yet been accomplished byscientists studying the origin of life?(A) synthesis of small RNA polymers by ribozymes(B) formation of molecular aggregates with selectivelypermeable membranes(C) formation of protocells that use DNA to direct thepolymerization of amino acids(D) abiotic synthesis of organic molecules
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Which scientists investigated the origins of organic molecules on the primordial Earth?
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How would you describe earth of millions year ago