Approximately How Long Did It Take the Human Population to Grow

question 121

Multiple Choice

Approximately how long did it take the human population to grow from 1 billion to 7 billion?

• A) Between 100 and 200 years
• B) Between 200 and 300 years
• C) Between 300 and 500 years
• D) Between 500 and 1,000 years
• E) More than 1,000 years

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Definitions:

Microphylls

Small, simple leaves with a single vein, found in some plant species, notably the lycophytes.

Megaphylls

Large leaves with a complex vein structure found in most vascular plants, as opposed to the simpler microphylls.

Vascular Strand

Tissue in plants that contains xylem and phloem, responsible for the transportation of water, nutrients, and sugars.

Stem Tissue

The supportive and conductive tissues in the stem of a plant, responsible for transporting nutrients and water throughout the plant.