What is matter in science

Hybrid instruments that play sounds that are part sampled and part synthesized are known as:

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land