A student is outside on a very hot day. How does perspiration help maintain his body heat?
Group of answer choices

It washes off bacteria off his skin. a

It prevents heat from entering his body. b

It causes evaporation and saves body heat. c

It causes evaporation and carries away body heat. d

Explain the significance of the increased cell specialization of the volvocine line

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

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.