1. Which population of organisms depends on eating another population of organisms for
food? Which organisms do they eat? How does the evidence support this?

Name the element in group 17, period 2. (periodic table)

Draw any one of the skeletal structures of a 2° alkyl bromide having the molecular formula of c6h13br and two stereogenic centers. indicate chirality by using wedge and hashed wedge notation. lone pairs do not need to be shown.

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device