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Abiotic factors are the non-living components in the environment that influence the lives and distribution of living organisms. These factors include things like:

• Temperature
• Rainfall
• Sunlight
• Soil type
• Water availability
• Air quality

. They play a crucial role in determining which species can thrive in a particular environment. For example, cacti are well adapted to hot, arid conditions and would not survive in a rainforest with heavy rainfall. Similarly, fish species have specific water temperature and quality requirements for survival. Abiotic factors can vary greatly from one ecosystem to another, creating habitats suitable for different sets of organisms. Understanding these factors helps scientists in biogeography study how and why species are distributed across different regions.

Species distribution refers to how different species are spread across various geographic areas. This distribution is influenced by abiotic factors like climate, soil, and water availability, as well as biotic factors such as competition and predation. Species are not randomly distributed but tend to occupy specific niches within ecosystems.
For example, polar bears are found in the Arctic regions where they have adapted to cold temperatures, while tropical birds are found in rainforests where they can thrive in humid and warm conditions. Several biogeographical patterns, such as endemism, where species are unique to specific locations, and cosmopolitan distribution, where species can be found worldwide, emerge from the study of species distribution.
Understanding species distribution helps in conservation efforts and in predicting changes in biodiversity as a response to environmental changes.

An ecosystem consists of all living organisms in a specific area, interacting with each other and with their physical environment. This includes both biotic (living) elements, such as plants and animals, and abiotic (non-living) elements like air, water, and soil. Ecosystems can vary greatly in size and complexity, from a small pond to a vast forest or ocean.
Each ecosystem has its own unique characteristics that make it suitable for certain species. For example, freshwater ecosystems like lakes and rivers support different life forms than marine ecosystems like oceans and seas. Ecosystems are dynamic and can be affected by both natural events, such as volcanic eruptions and storms, and human activities, like deforestation and pollution.
Studying ecosystems helps scientists understand the interactions between organisms and their environment, which is essential for maintaining biodiversity and ecological balance. Biogeography plays a key role in studying these interactions by examining the spatial distribution of ecosystems and understanding the factors that drive these patterns.