#1
Which organism is responsible for the majority of oxygen production on Earth?
#2
What is the primary source of energy for most ecosystems?
#3
What is the term for the process by which plants lose water vapor to the atmosphere?
#4
Which of the following is a primary consumer in a food chain?
#5
Which of the following is NOT a primary factor influencing population growth?
#6
What is the term for the total mass of living organisms in a given area?
#7
Which of the following is NOT a greenhouse gas?
#8
What is an example of a pioneer species in ecological succession?
#9
What is the process by which nitrogen from the atmosphere is converted into a form usable by plants?
#10
Which of the following is NOT a component of soil?
#11
Which of the following is an example of a density-independent factor affecting population growth?
#12
What is the term for the process by which one community replaces another over time?
#13
Which of the following is an example of mutualism?
#14
What is the term for the variety of different species in an ecosystem?
#15
Which of the following is an example of a keystone species?
#16
Which of the following is a major greenhouse gas?
#17