PRACTICE IN IDENTIFYING VARIABLES Identify the independent variable and dependent variable(s) in the following
experiments.
1. A researcher was interested in the effects of reward on intrinsic motivation. Some
children were told that they would be given a special award for drawing with magic
markers (an activity they already enjoyed) Other children were simply asked to draw
with the magic markers. One week later, the children were unobtrusively observed for
how much time they spent drawing with the markers. The children who expected and
received a reward for drawing with the markers were less likely to draw with them later

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.