What is the purpose of a coelom?
a. store extra body fluid
b. produce cells that can differentiate into germ layers
c. concentrate sense organs for cephalization
d. provide a space for internal organs to be stored and allowed to grow

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

cells spend most of their time in interphase

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: