Answer:
An increase in the volume of a substance while its mass remains the same. Expansion is usually due to heating. When substances are heated, the molecular bonds between their particles are weakened, and the particles move faster, causing the substance to expand.
Sustain a regular routine of exercise for 30-60 minutes with minimal fatigue
Answer:
C
Explanation:
FITT stands for frequency, intensity, type, and time. This principle is used to figure out, in physical education, how much exercise should be needed for a person.