I need an introduction paragraph for a 7th grade science fair project (How well can people focus with different background noises?)
The experiment was tested by reading a book for 20 minutes.
During the trials the subjects read in silence (As the control), then with music with lyrics, and instrumental music (Music without lyrics).
If someone could help I would really appreciate it! :)

Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

What is the cause hearing loss in human being