The following table shows the symptoms in four patients. Each patient suffers from a different disease.

Patient Disease Cause Symptom
A Tuberculosis Bacteria Difficulty breathing, coughing
B Polio Virus Paralysis
C Food poisoning Bacteria Vomiting, diarrhea
D Huntington's disease Hereditary Physical movement beyond patient's control
Which patient's musculoskeletal system is affected by an infectious agent?

Select one:
a. A
b. B
c. C
d. D

the answer is yes, they are born/created, then they grow to their limit then produce offspring, then die.

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

explanation:

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.