Question

sort each set of conditions to show whether they will cause population decline, population growth, or little change in population. high death rate, low birth rate low death rate, high birth rate high death rate, high birth rate low death rate, low birth rate population decline population growth little change in population

Explanation:

• Population Decline: When death rate > birth rate, population declines. "high death rate, low birth rate" has more deaths than births. "low death rate, low birth rate" – if death rate is low but birth rate is also low, and if death rate ≤ birth rate? Wait, no: "high death rate, low birth rate" (deaths > births) and "low death rate, low birth rate" – wait, no, let's re-express. Wait, "high death rate, low birth rate": deaths are high, births low → net loss. "low death rate, low birth rate": if death rate is low and birth rate is low, maybe balanced? Wait, no, let's think again.
• "high death rate, low birth rate": More people dying than being born → population decline.
• "low death rate, high birth rate": Fewer dying, more being born → population growth.
• "high death rate, high birth rate": Deaths and births are both high – if they are balanced (e.g., high death rate but high birth rate to compensate), or "low death rate, low birth rate": both low, maybe balanced. Wait, the key is the difference between birth rate (BR) and death rate (DR).
• Population Decline: BR < DR. So "high death rate, low birth rate" (DR > BR) and "low death rate, low birth rate" – wait, no, "low death rate, low birth rate" could be DR ≈ BR (little change) or BR < DR? Wait, maybe the intended logic is:
• Population Decline: BR < DR → "high death rate, low birth rate" (DR high, BR low → DR > BR) and "low death rate, low birth rate" – no, that doesn't make sense. Wait, maybe the options:
• "high death rate, low birth rate": DR > BR → decline.
• "low death rate, high birth rate": DR < BR → growth.
• "high death rate, high birth rate": DR ≈ BR → little change (since both are high, maybe offset).
• "low death rate, low birth rate": DR ≈ BR → little change (both low, offset).

Wait, that makes sense. Because:

• If both rates are high (high DR, high BR), the number of deaths and births could be similar (e.g., in a pre - modern society with high mortality and high fertility, population is stable).
• If both rates are low (low DR, low BR), deaths and births are both low, so population is stable (e.g., modern developed countries with low fertility and low mortality, population stable or slow growth/decline, but maybe "little change" here).
• "high DR, low BR": DR > BR → decline.
• "low DR, high BR": DR < BR → growth.

Answer:

• Population Decline: high death rate, low birth rate
• Population Growth: low death rate, high birth rate
• Little Change in Population: high death rate, high birth rate; low death rate, low birth rate