Question

use the graph to answer the question. how many countries expect to have an increase in population from 1950 to 2000 and from 2000 to 2050? population growth (bar graph with countries: australia, hungary, canada, s. korea, egypt; years: 1950 (blue), 2000 (orange), 2050 (light blue); y - axis: millions of people, x - axis: countries)

Explanation:

Step1: Analyze each country's population change from 1950 to 2000 and 2000 to 2050.

- Australia: 1950 (blue) < 2000 (orange) and 2000 (orange) < 2050 (light blue) → increase both periods.
- Hungary: 1950 (blue) < 2000 (orange)? No, 1950 and 2000 look similar, but 2000 (orange) > 2050 (light blue) → decrease from 2000 to 2050. So not counted.
- Canada: 1950 (blue) < 2000 (orange) and 2000 (orange) < 2050 (light blue) → increase both periods.
- S. Korea: 1950 (blue) < 2000 (orange) and 2000 (orange) < 2050 (light blue)? Wait, 2000 (orange) > 2050 (light blue)? No, 2000 (orange) is ~55, 2050 (light blue) is ~50? Wait, no, looking at the graph: Australia: blue ~10, orange ~20, light blue ~25 → increase. Hungary: blue ~10, orange ~12, light blue ~8 → 2000 to 2050 decrease. Canada: blue ~18, orange ~35, light blue ~45 → increase. S. Korea: blue ~25, orange ~55, light blue ~50 → 2000 to 2050 decrease? Wait, no, maybe I misread. Wait the question is "increase from 1950 to 2000 and from 2000 to 2050". So both periods must have increase. Let's recheck:

Australia: 1950 (B) < 2000 (O) and 2000 (O) < 2050 (L) → yes.

Hungary: 1950 (B) ~10, 2000 (O) ~12 (increase), but 2000 (O) ~12 > 2050 (L) ~8 (decrease) → no.

Canada: 1950 (B) ~18, 2000 (O) ~35 (increase), 2000 (O) ~35 < 2050 (L) ~45 (increase) → yes.

S. Korea: 1950 (B) ~25, 2000 (O) ~55 (increase), but 2000 (O) ~55 > 2050 (L) ~50 (decrease) → no.

Egypt: 1950 (B) ~25, 2000 (O) ~80 (increase), 2000 (O) ~80 < 2050 (L) ~135 (increase) → yes.

Wait, maybe I misread S. Korea. Let's check the y-axis: 0,20,40,60,80,100,120,140.

Australia: B ~10, O ~20, L ~25 → increase both.

Hungary: B ~10, O ~12, L ~8 → O > L → no.

Canada: B ~18, O ~35, L ~45 → O < L → yes.

S. Korea: B ~25, O ~55, L ~50 → O > L → no.

Egypt: B ~25, O ~80, L ~135 → O < L → yes.

Wait, but maybe S. Korea's 2050 is less than 2000? Let's count the countries where 1950 < 2000 AND 2000 < 2050.

Australia: yes.

Canada: yes.

Egypt: yes.

Wait, what about S. Korea? 2000 (O) is ~55, 2050 (L) is ~50? So 2000 > 2050 → no. Hungary: 2000 > 2050 → no. So Australia, Canada, Egypt? Wait no, let's check again.

Wait the graph:

- Australia: blue (1950) ~10, orange (2000) ~20, light blue (2050) ~25 → 10<20<25 → yes.

- Hungary: blue ~10, orange ~12, light blue ~8 → 10<12 but 12>8 → no.

- Canada: blue ~18, orange ~35, light blue ~45 → 18<35<45 → yes.

- S. Korea: blue ~25, orange ~55, light blue ~50 → 25<55 but 55>50 → no.

- Egypt: blue ~25, orange ~80, light blue ~135 → 25<80<135 → yes.

Wait, but maybe I made a mistake with S. Korea. Let's see the heights:

S. Korea's orange (2000) is up to ~55, light blue (2050) is up to ~50? So 55>50, so 2000 to 2050 is decrease. So only Australia, Canada, Egypt? Wait no, the question is "how many countries". Wait maybe I miscounted. Let's list each country:

1. Australia: 1950→2000: increase (10→20), 2000→2050: increase (20→25) → yes.

2. Hungary: 1950→2000: increase (10→12), 2000→2050: decrease (12→8) → no.

3. Canada: 1950→2000: increase (18→35), 2000→2050: increase (35→45) → yes.

4. S. Korea: 1950→2000: increase (25→55), 2000→2050: decrease (55→50) → no.

5. Egypt: 1950→2000: increase (25→80), 2000→2050: increase (80→135) → yes.

So that's 3 countries? Wait but maybe I misread S. Korea's 2050. Let me check again. The light blue for S. Korea is at ~50? Or maybe ~55? Wait the y-axis has 40, 60. S. Korea's light blue is between 40 and 60, maybe 50? Orange is at 55. So 55>50. So yes, decrease. So Australia, Canada, Egypt: 3 countries? Wait but maybe the graph is different. Wait the original graph:

Looking at the bars:

- Australia: blue (1950) ~10, orange (2000) ~20, light blue (2050) ~25 → correct.

- Hungary: blue ~10, orange ~12, light blue ~8 → correct.

- Canada: blue ~18, orange ~35, light blue ~45 → correct.

- S. Korea: blue ~25, orange ~55, light blue ~50 → correct.

- Egypt: blue ~25, orange ~80, light blue ~135 → correct.

So the countries with increase in both periods are Australia, Canada, Egypt? Wait no, wait Australia: 1950 to 2000: 10 to 20 (increase), 2000 to 2050: 20 to 25 (increase) → yes.

Canada: 18 to 35 (increase), 35 to 45 (increase) → yes.

Egypt: 25 to 80 (increase), 80 to 135 (increase) → yes.

S. Korea: 25 to 55 (increase), 55 to 50 (decrease) → no.

Hungary: 10 to 12 (increase), 12 to 8 (decrease) → no.

So that's 3 countries? Wait but maybe I made a mistake. Wait the question is "how many countries expect to have an increase in population from 1950 to 2000 and from 2000 to 2050". So we need to check for each country if 1950 < 2000 and 2000 < 2050.

Let's list the values (approximate):

- Australia: 1950: ~10, 2000: ~20, 2050: ~25 → 10<20<25 ✔️

- Hungary: 1950: ~10, 2000: ~12, 2050: ~8 → 10<12 but 12>8 ❌

- Canada: 1950: ~18, 2000: ~35, 2050: ~45 → 18<35<45 ✔️

- S. Korea: 1950: ~25, 2000: ~55, 2050: ~50 → 25<55 but 55>50 ❌

- Egypt: 1950: ~25, 2000: ~80, 2050: ~135 → 25<80<135 ✔️

So that's 3 countries? Wait but maybe the answer is 4? Wait no, let's check again. Wait S. Korea's 2050: maybe I misread. Let's see the light blue bar for S. Korea: is it above or below the orange bar? The orange bar is at ~55, light blue is at ~50? So below. So 2000 > 2050. So no. Hungary: light blue is below orange. So no. So only Australia, Canada, Egypt: 3? Wait but maybe the graph is different. Wait the user provided the graph: "Population Growth" with 5 countries. Let me count again.

Wait maybe I made a mistake with S. Korea. Let's see the y-axis: 0,20,40,60,80,100,120,140.

S. Korea's orange (2000) is at 55 (between 40 and 60), light blue (2050) is at 50 (between 40 and 60, but lower than orange). So 55>50. So 2000 to 2050 is decrease. So no.

Australia: 10→20→25: increase.

Canada: 18→35→45: increase.

Egypt: 25→80→135: increase.

So 3 countries. Wait but maybe the answer is 4? Wait no, let's check the original problem again.

Wait the question is "how many countries expect to have an increase in population from 1950 to 2000 and from 2000 to 2050". So we need to check for each country if both periods have increase.

Let's list each country:

1. Australia: 1950 to 2000: yes (blue < orange), 2000 to 2050: yes (orange < light blue) → count.

2. Hungary: 1950 to 2000: yes (blue < orange), 2000 to 2050: no (orange > light blue) → don't count.

3. Canada: 1950 to 2000: yes (blue < orange), 2000 to 2050: yes (orange < light blue) → count.

4. S. Korea: 1950 to 2000: yes (blue < orange), 2000 to 2050: no (orange > light blue) → don't count.

5. Egypt: 1950 to 2000: yes (blue < orange), 2000 to 2050: yes (orange < light blue) → count.

So that's 3 countries. Wait but maybe I misread S. Korea's light blue. Maybe it's above orange? Let me check the graph again. The light blue bar for S. Korea is shorter than orange? No, the orange bar is at ~55, light blue at ~50? So shorter. So no. So the answer is 3? Wait but maybe the correct answer is 4? Wait no, let's see the numbers.

Wait Australia: 10,20,25 → increase.

Canada: 18,35,45 → increase.

Egypt: 25,80,135 → increase.

That's 3. So the number of countries is 3? Wait but maybe I made a mistake. Wait the original graph: let's count the number of countries where both 1950 < 2000 and 2000 < 2050.

Australia: yes.

Canada: yes.

Egypt: yes.

So 3.

Answer:

3