Energy from sunlight can excite electrons, kicking them out of their orbitals and creating free radicals. free radicals are highly reactive atoms or molecules that have unpaired electrons. they degrade and destroy other compounds in their vicinity. carotenoids, one of the pigments present in most chloroplasts, can stabilize these free radicals. this suggests that

Ais a group of individuals of the same that exist together in the same place at the same time

Which two factors contributed to creating a global culture? the creation of the united nations improvement in telecommunications health issues such as the ebola virus increased opportunities for global travel

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms