1. Humans feel hungry when their empty stomachs contract and when glucose levels in the blood drop. Both of these situations stimulate neurons that send
messages to the brain which are interpreted as hunger. What body systems are
involved in this process as described and how?

Forensic anthropologists: a. apply anthropological techniques to legal matters. b. are primarily concerned with the recovery of material culture remains. c. examine the relationships between medical treatment and culturally determined views of disease. d. study disease and trauma in ancient populations. e. study nonhuman primates.

Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?

Describe two recent or ongoing space missions.