D. A struggle for existence is apparent.
If a struggle for existence is apparent, natural selection occurs because all of the weak/unfit/unadapted ones die.
D.lets things enter or exit the cell
Imagine that a person has a disorder of the pancreas that does not allow it to secrete digestive enzymes. The breakdown of the macromolecule would be <span>affected the most by this disorder. The macromolecule is called the "Nucleic Acids."</span>
Explanation:
The stimulus–response model is a characterization of a statistical unit. The model allows the prediction of a quantitative response to a quantitative stimulus, for example one administered by a researcher.☺️☺️☺️
an act of responding. 2 : something constituting a reply or a reaction: such as. a : a verse, phrase, or word sung or said by the people or choir after or in reply to the officiant in a liturgical service.☺️☺️☺️follow me