Question

data sources: our world in data and the statistical review of world energy
use the data to complete the statements:
between 1965 and 2015, the global population roughly ____. during the same period of time, global energy use roughly ____.

• doubled... tripled
• tripled... doubled

so, ____ increased faster than ____.

• energy use... the population
• the population... energy use

Explanation:

First Part (Population and Energy Use Trend)

To answer, we recall global trends: 1965 global population was ~3.3 billion, 2015 ~7.3 billion (roughly doubled? Wait, no—3.3 to 7.3 is ~2.2x, close to doubled? Wait, no, 1965 pop ~3.3, 2015 ~7.3: actually, 3.32=6.6, 3.33=9.9, so 7.3 is closer to doubling (but maybe the data here considers 1965 - 2015: population tripled? Wait, no, 1965 pop ~3.3, 2015 ~7.3 (actually, 3.3 to 7.3 is ~2.2x, but maybe the problem’s data has population tripling? Wait, no, energy use: 1965 global energy use ~5000 Mtoe, 2015 ~15000 Mtoe (tripled). Wait, the options: first blank for population, second for energy. Wait the options are "doubled...tripled" or "tripled...doubled". Wait, 1965 pop ~3.3B, 2015 ~7.3B: ~doubled (3.32=6.6, 7.3 is ~2x). Energy use: 1965 ~5000, 2015 ~15000: tripled (50003=15000). Wait no, the first option is "doubled...tripled" (population doubled, energy tripled). Wait, maybe the problem’s data: let's check the options. The first question: "Between 1965 and 2015, the global population roughly __. During the same period, global energy use roughly __." The options are "doubled...tripled" or "tripled...doubled". So if population doubled (from ~3B to ~7B? No, 3*2=6, 7 is ~2x) and energy tripled (from ~5 to ~15), then first blank: doubled, second: tripled? Wait no, 1965 pop was ~3.3, 2015 ~7.3: ~2x (doubled). Energy use: 1965 ~5, 2015 ~15: 3x (tripled). So the first correct option is "doubled...tripled"? Wait no, the options are "doubled...tripled" (first option) or "tripled...doubled" (second). Wait, maybe I got it reversed. Wait, 1965 population: ~3.3 billion, 2015: ~7.3 billion (so ~doubled). Energy use: 1965: ~5,000 Mtoe, 2015: ~15,000 Mtoe (tripled). So the first part: population doubled, energy tripled. So the first option is "doubled...tripled".

If population doubled and energy tripled, then energy use increased faster (tripled > doubled). So "energy use...the population".

Global population 1965 (~3.3B) to 2015 (~7.3B) roughly doubled. Global energy use 1965 (~5000 Mtoe) to 2015 (~15000 Mtoe) roughly tripled. So the correct pair is "doubled...tripled".

Answer:

A. doubled...tripled (assuming the first option is labeled as such; but in the image, the first option is "doubled...tripled", second "tripled...doubled". So correct is "doubled...tripled".

Second Part (Which Increased Faster)