Question: Fact 1: If an object is black then that object absorbs all visible light.  Fact 2: An object is an item in the real world.  Given the two facts above, what does a black item do?
Answer: absorbs all visible light

Question: Fact 1: Echinoderms lack respiratory and excretory systems.  Fact 2: Lung mechanics and gas exchange are topics during study of the respiratory system.  Given the two facts above, what do Echinoderms lack?
Answer: Lungs

Question: Fact 1: Most plants grow roots down into the soil to absorb water and minerals.  Fact 2: Plant roots begin to stabilize the soil against erosion.  Given the two facts above, what is a positive effect of plant needs for water and minerals from soil?
Answer:
erosion prevention