Idea #1: all living things are made of:
cells
discovered through:

Explanation:

The cell was first discovered by Robert Hooke in 1665 through the microscope.  Theodor Schwann and Matthias Jakob Schleiden discovered cell theory and postulated that All living organisms are composed of one or more cells ,the cell is the most basic unit of life and All cells arise only from pre-existing cells

the statement is true

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: