Explain why all models hmodels need to be changed when
a.
they are based on experimental data
b.
scientific understanding changes
c.
they represent a phenomenon
d.
they are designed to answer a question
ave limitations

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some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded

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in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: