Question

question 3
a biome is best described as a major type of ecosystem with which of the following characteristics?
groups of communities at various successional stages
systems of habitats having differing climates
distinctive rainfall, temperature, and organisms
different animals having similar niches

Explanation:

A biome is defined by its distinctive climate (including rainfall and temperature) and the organisms that are adapted to live in that climate. Communities at various successional stages (which is about ecological succession) don't define a biome. Systems of habitats with differing climates would not be a single biome. Different animals having similar niches is more about ecological niches rather than biome - level characteristics.

Answer:

distinctive rainfall, temperature, and organisms