A student is studying Earth's layers. She is trying to determine how temperature and density change from one layer to another. Which relationship that exists between Earth's layers did the student most likely find? A. The temperature of Earth's layers decreases with depth, while density increases with depth.

B. The temperature of Earth's layers increases with depth, while density decreases with depth.

C. The temperature and density of Earth's layers decrease with depth.

D. The temperature and density of Earth's layers increase with depth.

Which of the following is not a main characteristic that scientists focus on when determining which kingdom an organism belongs to

15 ! come and answer! a(n) disease is caused by a pathogen and can spread among organisms. a infectious b noninfectious c toxic d contaminated

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.