Which is an example of a chemical change?

when you put chemicals in water and the water gets chemically changed?

burning,cooking,rusting,and rotting.

Explanation:

A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.

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.