There are three main types of symbiotic relationships: mutualism, commensalism, and parasitism. Which statement depicts commensalism? Defend your choice 1. The tick derives benefit while the dog is harmed. 2. Only one animals, the remora benefits. The shark is not hurt or helped. 3. The mosquito sucks the blood from warm-blooded animals and possibly transmits disease. 4. The elephants supply a food source by allowing the birds to eat parasites and other bugs from their skin.

You need to be more specific.  i really don't know what a "motion map" is.you can draw a graph of an object's position, distance, displacement, speed,velocity, or acceleration versus time, or you can draw a graph of the object's x-position versus its y-position and not give any information about time at all.if the graph presents position or displacement against time,  then constant velocity is a straight line . . i.e. a line that has  constant slope.if the graph shows speed against time, then constant velocityis a horizontal piece of line.if the graph shows acceleration against time, then constant  velocity is a piece of line that lies on the x-axis . . it's value is zero. 

Mass and velocity are the 2 factors used to calculate kinetic energy. the equation for kinetic energy is (1/2)mv^2. hope this !

The statement that best describes the object on the right is a bar magnet with its north pole on the left.

Cannot be determined because i dont  know this but i need the points