What are the highest points on a standing wave called?
a. nodes
b. antinodes
c. compressions
d. rarefactions

B is the answer.

Standing waves have zero points called nodes, and points of maximum amplitude called antinodes.

Standing waves patterns are produced when two waves of the same frequency interfere with one another while travelling opposite directions along the same medium.

Standing waves patterns are characterized by certain fixed points along the medium which undergo no displacement. . These points are called nodes and are always located at the same location along  the medium giving the entire pattern an appearance of standing still. 

the answer is b

chlorophyll a: this is the most abundant pigment in plants. chlorophyll a absorbs light with wavelengths of 430nm(blue) and 662nm(red). it reflects green light strongly so it appears green to us.

did you mean: energy is defined ashyperactivitya caloric measurementthe ability to move matterthe ability to think and analyze this form of energy is called "energy in motion" or "energy of moving matter"potential energy kinetic energy electrical energy1 ptlights on a stage can be examples of all of the following forms of energy exceptelectrical energylight energythermal energysound energywhen one type of energy changes to another this is called energy energy is stored based on their position or shape this is called energy.kinetic potential sound electromagnetic