1. Introduction to Biology

Which of the following best describes the main difference between primary and secondary succession in ecological communities?

A species has a better chance of surviving if it has greater variation in its:

If grass is one of the pioneer species in a forest ecosystem, what role does it most likely play in ecological succession?

Which of the following best describes a common measure of evolutionary fitness in a population?

When would a researcher be most likely to observe resource partitioning among species in an ecosystem?

Which of the following best describes the niche of a lion in its natural habitat?

Which statement best describes how natural selection contributes to evolution?

If a bird species requires a long beak to survive in its environment, what is most likely to happen to the short-beak trait in the population over time?

How are the platypus’s bill and feet specially adapted for survival in their environment?

What determines how 'fit' an organism is in the context of natural selection?

Which of the following best describes the process of natural selection over time?

Which of the following prey, when consumed by the elf owl, would classify it as a tertiary consumer?

Which of the following best describes the effect of natural selection?

When selection operates to eliminate intermediate phenotypes, it is referred to as:

Of the scenarios below, which represents the occurrence of evolution at its smallest scale?