1. what is a nebula? how does it contribute to the birth of a star? 2. why is equilibrium important to a star? 3. do large or small stars live longer? explain your answer. 4. what is the main sequence phase of a star? 5. what are the three main fuels that stars use for fusion? describe the process of burning each fuel and include at least one paragraph for each of the three main fuels. 6. are all stars in the universe the same? why or why not? defend your answer with information from the unit and the lab material.

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Describe one of your personality traits that you believe to be highly heritable and another trait that seems to be much less so. provide reasons for your answer, and explain why you would expect genetics to exert a greater impact on some personality traits than on others. 10. discuss at least 3 cultural/environmental factors that may influence behavior.

20 pts i don't really get this xd1. what is the function in humans of the protein produced from that gene2. would you expect to find the same protein in other organisms? if so, which ones? 3. is it possible to find the same gene in two diff. kinds of organisms4. if you found the same gene in all organisms you test, what does this esuggest about the evolution of this gene in the history of life on earth? 5. does the use of dna sequences in the study of evolutionary relationships mean that other characteristics are unimportant in such studies? explain your answer. what am i supposed to do here