Using the five types of relationships discussed in this Lesson, write a paragraph showing these types of relationships with humans. For example, two people might be in competition for the same job. The five main types of relationships among species in ecosystems.

1 –competition
2 –predation
3 –parasitism
4 –mutualism
5 –commensalism

Scientists are conducting a study on the effectiveness of a new drug on memory loss. they are giving some of the test subjects the new drug to find out if it improves their long-term memory. which are possible limitations of this study? check all that apply. a) test subjects may want to participate in additional experiments. b) test subjects may think they should be paid more. c) test subjects may get bored and want to quit early. d) test subjects may have to travel during the experiment. e) test subjects may have full-time jobs. this is multiple choice. you for the !