Living Environment Regents Practice Test

What is a possible cause for the increase in the number of species extinctions?

1. Not enough food

2. Climate change

3. Overpopulation

4. Loss of habitat

The correct answer is: Not enough food

The correct answer focuses on loss of habitat as a primary cause for the increase in species extinctions. Habitat loss occurs when natural environments are altered or destroyed, usually due to human activities such as urban development, agriculture, and deforestation. When animals and plants lose their natural habitats, they are unable to find the resources they need to survive, which can lead to declining populations and eventual extinction. Habitat loss disrupts ecosystems and reduces biodiversity, making it challenging for species to adapt to the rapid environmental changes. Fragmented habitats can also isolate populations, making it harder for them to interbreed and maintain healthy genetic diversity. As ecosystems become more vulnerable, the likelihood of extinction increases, highlighting the critical need for conservation efforts aimed at protecting natural habitats. While factors like climate change, overpopulation, and lack of food can contribute to species decline, habitat loss is a fundamental issue that often drives these other factors by altering the conditions in which species live. Addressing habitat destruction is essential for preventing further extinctions and supporting biodiversity.