Advanced Placement (AP) European History Practice Exam

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Prepare for the AP European History Exam. Study with flashcards and multiple choice questions; each question includes hints and explanations. Ace your exam!

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How many grass species comprise most of the sown grass pastures in the world?

  1. About 10,000 species

  2. About 1,000 species

  3. About 400 species

  4. About 40 species

The correct answer is: About 40 species

The most commonly used sown grass pastures around the world typically comprise about 40 species of grass. This relatively small number of species is favored due to their adaptability, growth patterns, and the nutritional value they provide to livestock. These grasses can thrive in a range of climates and soil types, making them widely applicable for agricultural use across different regions. Selecting from a limited number of species allows farmers to focus on those that yield the best results in terms of resistance to disease, drought tolerance, and overall productivity, ensuring they can sustainably manage their pastures. While there may be thousands of grass species globally, only a fraction is cultivated for pasture due to these factors.

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