1. The ultimate source of energy in the sugar
molecules produced by photosynthesis is
a. sugar.
b. the sun.
f. oxygen.
d. ATP.
e. chlorophyll.

the correct answer is f) oxygen because the by product of photosynthesis is sugar and oxygen which is later release into the atmosphere

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.