Answer:
Grasslands and savannas are related and often intermixed biomes typically dominated by grasses. True grassland supports few if any woody plants, while savannas include varying proportions of shrubs and trees, grading into woodland where canopies begin mingling.
Explanation:
Weight is the factor that is often related to the onset of puberty for females. It is very important the women to maintain normal weight , not to be underweight or overweight in order to have normal menstrual cycle and be healthy in general.
I am not entirely sure, but i think it would be the respiratory system because plants produce oxygen after taking in carbon dioxide, and that is similar to the human respiratory system. I am not completely sure though. hope this helps!