What is the relationship between the PE and the height of the skater on the track? Use words like high, medium, low. A. When the skater is at the beginning of the track, the potential energy is . B. When the skater is at the middle of the track, the potential energy is . C. When the skater is at the end of the track, the potential energy is .

Explain how scientists use geologic time to determine the age of landforms.

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.

Why did mendel use pea plants in his experiments? a. they have no alleles. b. they are haploid organisms. c. they reproduce quickly. d. they are all male.