Which is true about all unicellular and multicellular organisms? a: they are made of one cell
b: they reproduce
c: they cause infections
d: they are made of multiple cells

A. they are made of one cell

Explanation:

Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. ... Multicellular organisms are composed of more than one cell, with groups of cells differentiating to take on specialized functions.

oceans

indian ocean

pacific ocean

atlantic ocean

arctic ocean

southern ocean

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: