Which of the following best describes an outgroup in a phylogenetic tree? A. A species that is most distantly related to all the other species
B. A species that contains more derived traits than the other species
C. A species that is most closely related to all the other species
D. A species that contains more ancestral traits than the other species

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

c.more precipitation,but only when emission levels.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.