Plz will give right answer brainliest : ) asap 20 points

1-how does density affect behavior at plate boundaries?

2-what factors affect what occurs at a plate boundary?

Iknow #2 is d. i just need to know why

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.