The metabolic waste ammonia pose a problem for all animals because of the physical properties that it has and its effect on the body of the animals. It has a <span> strong, pungent </span><span>odor. Also, it can be a poison to the body. Hope this answers the question. Have a nice day.</span>
Humans are indeed still evolving, the way how we are evolving nowadays has changed slightly compared to how we would have been evolving had we not developed cities and the modern way of life and how we live. There are always adaptations going on and different selective pressures as well.
Surface area
That sign is just indicating micro
the correct answer is Proportional
It is C. Their population has increased.