What are the two types of mechanical energy? What is the unit of potential energy?
What two things determine the potential energy of an object?

What role do traits play in affecting an organisms ability to reproduce? finches

Which of the following lines of evidence would best support your assertion that a particular plant is an angiosperm? a) it produces seeds. b) it retains its fertilized egg within its archaegonium. c) it lacks gametangia. d) it undergoes alternation of generations.

During convection, less dense fluid rises and denser fluid sinks.