What is an easy way to memorize the word ecology

Okay, the word ecosystem means (from google) "A biological community of interacting organisms and their physical environment."

The definition of ecology  (from google) "Is the branch of biology that deals with the relations of organisms to one another and to their physical surroundings."

So some types of studies of science end with -logy. So just remember ecosystem and studies.

Explanation:

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

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: