Para-jumble (sentence arrangement): Arrange P–Q–R–S to complete the explanatory paragraph about humanity’s use of energy from the sun and the emergence of a new energy source. S1 = "Throughout history, humans have used energy from the sun." P = "Today, when we burn wood or use electric current, we are drawing on energy." S = "This energy has ultimately come from the sun." R = "All our ordinary life depends on energy from the sun." Q = "However, we now have a new supply of energy." S6 = "This energy comes from inside atoms." Between S1 and S6, place P–Q–R–S in a logically flowing order that builds cause and effect. Choose the correct sequence of P–Q–R–S that completes the paragraph.

Given data

• S1: Humans have long relied on solar-derived energy.
• P: Modern usages (wood, electricity) are still energy drawdowns.
• S: Clarifies that such energy is ultimately solar.
• R: Generalizes the dependence of ordinary life on solar energy.
• Q: Introduces a new, non-solar source; S6 names it (atomic energy).

Concept/Approach
Lead with present-day examples → attribute them to the sun → generalize our reliance → contrast with a newly available source that S6 identifies.

Step-by-step reasoning
P: Establishes contemporary ways we "draw on energy." S: Grounds these in solar origin (photosynthesis → wood; hydrological cycles/ancient biomass → electricity in many forms). R: Broadens to societal dependence on solar-derived energy. Q → S6: Pivots to a new source—inside atoms—which S6 explicitly states.

Final Answer
PSRQ