What is a worm cast?

Prepare for the Academic Decathlon Science Test. Study with flashcards and multiple choice questions, each question offers hints and explanations. Get ready for your scientific challenge!

Multiple Choice

What is a worm cast?

Explanation:
Worm castings are the nutrient-rich organic matter excreted by earthworms as they digest soil and organic material. This material adds plant-available nutrients and improves soil structure, porosity, and microbial activity, all of which boost soil fertility and help with water drainage. So, the nutrient-rich organic matter excreted by earthworms best describes a worm cast. The other options—being a shell, a fish, or a type of worm—are not produced by earthworms as waste and don’t describe worm casts.

Worm castings are the nutrient-rich organic matter excreted by earthworms as they digest soil and organic material. This material adds plant-available nutrients and improves soil structure, porosity, and microbial activity, all of which boost soil fertility and help with water drainage. So, the nutrient-rich organic matter excreted by earthworms best describes a worm cast. The other options—being a shell, a fish, or a type of worm—are not produced by earthworms as waste and don’t describe worm casts.

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