8. Do you think abiotic factors, such as soil nitrogen or available water, influence plant growth more than biotic variables, such as the presence of herbivores, or competition from other plants that compete for the same resources? Expound on your answer.

The answer to this question depends on the specific environment and the species of plants in question. Generally speaking, abiotic factors such as soil nitrogen and available water can have a significant influence on plant growth, as these are essential resources for plant growth and development. However, biotic variables such as the presence of herbivores or competition from other plants can also have a significant impact on plant growth. For example, if a plant is competing with other plants for the same resources, it may not be able to access the necessary resources to grow and develop. Similarly, if a plant is being eaten by herbivores, it may not be able to access the necessary resources to grow and develop. Ultimately, both abiotic and biotic variables can have a significant influence on plant growth, and the relative importance of each will depend on the specific environment and species of plants in question.