Multiple Choice
What characteristic makes an organism a keystone species in an ecosystem?
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48. Ecology
Introduction to Ecology
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following includes only biotic factors?
A
Temperature, humidity, and wind
B
Rocks, minerals, and air
C
Sunlight, water, and soil
D
Plants, animals, and bacteria
Verified step by step guidance1
Understand the concept of biotic factors: Biotic factors refer to the living components of an ecosystem. These include organisms such as plants, animals, fungi, and microorganisms like bacteria.
Identify the options given in the problem: The problem provides four sets of factors, and you need to determine which set includes only biotic factors.
Analyze each option: Go through each set of factors and determine whether they are living (biotic) or non-living (abiotic).
Option 1: Temperature, humidity, and wind are abiotic factors because they are non-living elements of the environment.
Option 4: Plants, animals, and bacteria are biotic factors because they are living organisms, which is why this option is the correct answer.
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