Abiology teacher asked his class to make models of a plant cell, an animal cell, and a bacteria cell. aside from cytoplasm and the cell membrane, which other cell structure will the students need to make for all three models?

i'd say that the moon rock is about 2.2 billion years old.

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: