13 Questions
What is an ecosystem?
All the living and non-living things in an area and their interactions
Which of the following is an abiotic factor?
Soil
What are decomposers?
Organisms that break down dead matter
In a food chain, what is the role of a producer?
To make their own food through photosynthesis
Which of the following is a biotic factor in an ecosystem?
Plants
What effect does red tide algae have on marine life?
produces toxins that paralyze and kill fish
Which of the following statements about food webs is true?
They consist of interconnected food chains
What can happen to an ecosystem if one species is removed?
can disrupt the balance and affect other species
Which abiotic factor is essential for photosynthesis in plants?
Light
Which of the following is an example of a predator-prey relationship?
Lion and zebra
Which factor is most likely to cause a decrease in the population of predators?
Decrease in prey population
What role do decomposers play in the nutrient cycle?
They break down dead matter and return nutrients to the soil
How does temperature affect cold-blooded animals?
Their activity level varies with the surrounding temperature
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