Which of the following statements about psychological constructs is true? A. Psychological constructs are easy to define and measure. B. Psychological constructs represent concepts that cannot be observed or measured directly. C. Psychological constructs cannot be researched in psychology because they are unobservable. D. Psychological constructs represent measurable overt behavior. Please select the best answer from the choices provided A B C D

Define dew point. i am writing this part to be able to ask the question

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse