Some of the best information on climate history over the last several million years is based on the study of Group of answer choices foraminifera. dendrochronology. radioisotopes. amino acids.

answer; ////increased water pollution; ///////////////////////

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geologic time scale (for gradpoint) =)

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.