Question

1. which of the following does an oak tree need to survive in a healthy ecosystem? oak tree a. carbon dioxide b. wind c. predators d. oxygen

Explanation:

Oak trees, like all plants, perform photosynthesis. In this process, they take in carbon dioxide ($CO_2$) from the atmosphere. Along with water and sunlight, they convert these into glucose (a form of energy storage) and oxygen. Carbon dioxide is thus an essential raw - material for their survival and growth. Wind is not a fundamental requirement for their basic survival processes. Predators are harmful to the tree and not a need for its survival. While oak trees produce oxygen as a by - product of photosynthesis, they do not need oxygen for the process of photosynthesis (they use oxygen in respiration, but carbon dioxide is more directly related to their primary energy - generating process).

Answer:

A. Carbon dioxide