Cell wall and chloroplast are two examples of structures which are found in plant cells but not in animal cells.
The electromagnetic radiation with the shortest frequency is MICROWAVES.
Electromagnetic spectrum refers to the distribution of electromagnetic radiations according to their frequency or wavelengths. Electromagnetic spectrum is made up of many type of radiation, which have different properties. The frequency of electromagnetic radiation refers to the number of wave cycle that is formed per second. The electromagnetic radiation with the highest frequency is gamma ray while the radiation with the shortest frequency is radio wave. For the question given above, the radiation with the shortest frequency is microwaves.
Answer:
taking the pretest
Explanation:
A one-group pretest–posttest design is a type of research design generally used in behavioral research aimed at estimating the treatment effects on the sample. In this experimental design, the target group of participants is first pre-tested on the dependent variable and, subsequently, post-tested after the administration of a treatment. In consequence, the participants of the target group receive the same treatment and assessment. The problem of testing effects indicates that testing may become a problem when the pretest may change participant's behavior. When there are statistically significant differences between the pretest and posttest data, it is possible to support the working hypothesis.
