Bob bought school supplies for school. A mechanical pencil for $2.53, a 5 subject notebook for $6.10, glue for $.50 and a pencil sharpener for $1.45. How much did get in change if he paid with a $20? * 20 points

The different forms of a gene for a given trait are called .

Classify each action depending on whether it will meet or fail to meet the goals of the organization. a group of students form a healthy earth club at their school. their goal is to limit their school’s impact on human-led climate change. they brainstormed a list of actions they can take to meet this goal.

The tendency to seek out individuals who represent the same level of physical attractiveness as ourselves is explained as