11. The Miller-Urey experiment showed that, under certain conditions, organic compounds could form
from inorganic molecules. What is one consequence of this experiment?
a. Scientists think that life could not have developed through natural chemical and physical
processes.
b. The experiment proved that methane and ammonia will always give rise to organic molecules in
any circumstance.
C. Scientists think it is possible that organic compounds formed from the inorganic compounds
present on Earth billions of years ago.
d. The experiment used the exact inorganic compounds present on Earth billions of years ago and left
little doubt about the mechanism of early life.

This is one form of rna that transports a specific amino acid to a ribosome during protein synthesis.

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except