A breeder who works to increase yield in wheat begins with a population that has an average yield of 40 bushels per acre. She selects parents with an average yield of 46 bushels per acre. The offspring of these parents have an average yield of 42 bushels per acre. What is the narrow sense heritability of yield in this population of wheat? Show your calculations, including values for the response to selection and the selection coefficient.

Describe two recent or ongoing space missions.

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.

Several billion years ago which gas was the least prevailant in the atmosphere