The spontaneous formation of organic molecules does not happen today because they are
A. consumed by organisms or oxidized to simpler inorganic compounds in the atmosphere.
B. destroyed by the increase in harmful radiation coming through holes in the ozone layer.
C. unable to form because of a lack of sufficient internal energy.
D. photosynthesis is all that is required.
A. consumed by organisms or oxidized to simpler inorganic compounds in the atmosphere.
You might also like to view...
Normal biota generally exist in either a _______ or _________ association with their hosts
Fill in the blank(s) with the appropriate word(s).
When the ?G°' of a chemical reaction is positive (K'eq < 1.0) under standard conditions,
A) reactants and products are at equilibrium. B) work can be done under these conditions. C) reactants predominate over products. D) the reaction is spontaneous to the right. E) the reaction is exothermic.
On a remote island, a new animal is found. It has a four-chambered heart and lungs and is endothermic. It has internal fertilization, lays shelled eggs, and nurses its young after they hatch. This animal is most likely a(n)
A) monotreme. B) reptile. C) amphibian. D) coelacanth. E) marsupial.
All of the following animals are likely to undergo parthenogenesis EXCEPT
A. lizards. B. insects. C. humans. D. flatworms. E. fish.