The Moon completes one orbit around the Earth in approximately in approximately
and completes one cycle of its phases
A 271/3 days, 24 hours
B 24 hours, 24 hours
C 24 hours, 29 1/2 days
D 27 1/3 days, 29 1/2 days

Long term exposure to waves can cause sunburns and skin cancer.

Si el equipo no fuera bueno no con el entrenador.

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.