How are musical instruments grouped?

by the wavelengths they produce

by how they produce pitch

by what they are made of

by their frequency

Four types of motile cells in human body?

Which of these has happened to your food by the time it reaches your small intestine? a. all the macromolecules have been broken down completely. b. lipids and starches have been partially broken down. c. starches and proteins have been partially broken down. d. proteins and lipids have been broken down into subunits.

Scientific evidence is most likely to be consistent if it is based on data from