How would you explain the origin of life on Earth, as supported by science, to my seven year old? Be sure to use (and explain) the terms: abiogenesis, primordial soup, and endosymbiosis.

Joe is breeding cockroaches in his dorm room. he finds that the average wing length in his population of cockroaches is 4 cm. he chooses the six cockroaches that have the largest wings; the average wing length among these selected cockroaches is 10 cm. joe interbreeds these selected cockroaches. from earlier studies, he knows that the narrow-sense heritability for wing length in his population of cockroaches is 0.6. a. calculate the selection differential and expected response to selection for wing length in these cockroaches. b. what should be the average wing length of the progeny of the selected cockroaches?

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

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