Which of the following is an abiotic factor that affects population size in an ecosystem?

What is the term used to describe the variety of different species in an ecosystem?

Which of the following is an example of a pioneer species in primary succession?

What is the term used to describe the role a species plays in its ecosystem, including what it eats and what eats it?

Which of the following statements best describes how energy flows through an ecosystem?

What is the term used to describe the mutually beneficial relationship between two species where both partners benefit?

Which of the following is an example of a density-independent factor that can influence population size?

What is the main source of energy in most ecosystems?

What is the process by which nutrients are returned to the soil from dead organisms and waste materials?