The energy from the water snake flows into the egret.
Environmental parameters indicate whether or not resource use is harming the environment and this way monitoring environmental parameters affect policies regarding resource use. The correct option among all the options that are given in the question is the last option or option "d". By watching these indicators, it is possible to preserve the natural balance.
His red blood cell count is low, so Gerald is feelign lightheaded and tired.
Nutrients are substances used by an organism for the purpose of growth, reproduce and survive. These includes proteins, fats, carbohydrates, minerals and vitamins. They are used to provide energy, as structural components, regulation components such as hormones and other messengers among other functions. Proteins and fats are used for regulatory functions and control the activities of the body, these are enzymes and hormones. In this case, carbohydrates do not perform regulatory functions in the body.