Identify one type of pathogen or infectious agent. describe ways to prevent the spread of the diseases this type of pathogen can cause and explain why these preventative measures are important.

Is there any solid scientific evidence that humans have been cloned?

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.

Polar zones are cold and tend to be dry because of a pressure system of cold. low high