The answer is the physical changes that occur in the body as sexual development is stimulated by hormonal changes. The hormonal signals are produced by the brain to the gonads: the ovaries in a girl, the testes in a boy. In response, the gonads produce hormones that stimulate libido and the growth, and the respective physical characteristics associated with either sex.
<span>Large carnivores in general are often used as indicator species because of their seat at the top of the food chain. ... When a large carnivore is missing from an ecosystem this can
reflect problems in prey populations, usually caused by larger issues
such as over-harvest of game, presence of disease, or habitat changes.</span>
sunlight and nutrient availability
The answer to your question is supply invoice
