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- why is all the carbon on earth not used if every living thing requires itStanley Miller and Harold Urey provided the first experimental evidence that . Group of answer choices Inorganic molecules could be created from organic precursors Darwin's theory of evolution by natural selection could be correct Organic molecules could be created from inorganic precursors The atmosphere of Early Earth contained inorganic moleculeswhy do living thing need carbon
- Why protiens are called the shapers of life?For a long time, it was believed that life originated from decaying matter. What is this theory known as? Name the scientist who experimentally disproved this theory.Explain why life on Earth is carbon-based rather than, for example, hydrogen- or oxygen-based.
- What are the eons in which the following events occur? Origin of Earth. Oxygen appeared in the atmosphere Prokaryotic cells Single cell eukaryotes Multicellular eukaryotes Animals PlantsIn their laboratory experiments of simulations of early Earth, Miller and Urey observed the abiotic synthesis of abundant amounts of DNA amino acids liposomes genetic systems Which of the following was probably NOT present in the primitive Earth s atmosphere (when life first appeared)? O2 NH3 H2O CH4 CO2Which of the following questions about the origin of life on Earth is most scientifically testable? * Why were the earliest life-forms created using only twenty amino acids? Did life originate to make the universe a better place? Was catalytic RNA used by ancient organisms as a stepping stone to acquire protein enzymes? Can simple organic molecules form spontaneously in an oxygen-free atmosphere?