Question

quiz how populations grow frank counts 56 maple trees living on a 20-acre tract of land, and the data allows him to calculate the choose... of the maple trees on the land. he observes that most of the maple trees grow closely together in groups of 6 to 8 trees, which describes the choose... . the choose... of the maple trees shows the percentages of trees of different ages.

Explanation:

To solve this, we analyze each blank based on population ecology concepts:

First Blank:

When we calculate the number of organisms (maple trees) per unit area (20 - acre land), this is the population density. The formula for population density is $\text{Population Density} = \frac{\text{Number of Organisms}}{\text{Area}}$. Here, number of maple trees is 56 and area is 20 acres, so we calculate density as $\frac{56}{20}$ (though the question just asks for the term, not the calculation).

Second Blank:

The description “grow closely together in groups of 6 to 8 trees” refers to how individuals are spaced within the population, which is population distribution (specifically clumped distribution here).

Third Blank:

The “percentages of trees of different ages” describes the age structure of the population, as age structure shows the proportion of individuals in different age groups.

Answer:

s (assuming dropdown options include these terms):

1. First blank: Population Density
2. Second blank: Population Distribution (or Clumped Distribution, depending on options)
3. Third blank: Age Structure