Select all of the answers that apply (< take notice to this part of my question)instruments used to monitor a volcano include - seismographs - richter scale - tiltmeters - correlation spectrometers - mercalli intensity scale

b.transmitters send radio waves, and receivers capture radio waves.

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever