7. The function of the human excretory system is to 0
A. break food into small molecules that the body can absorb.
O
B. dispose of wastes and control body fluid composition.
C. move materials from the environment into the body.
D. produce enzymes the body needs to break down food.

B

Explanation:

It removes other waste from our body and keeps our blood clean

the missing space is phylum

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.