1which of these best identifies biotic factors in a forest environment a. plants animals and their surroundings including wildflowers birds rocks and waterb. the features of the habitat and decays material including soil are dead trees and bacteriac. the things living plants and animals need including air water soil and nutrientsd. producers consumers and decomposers including wildflowers deer song birds and mushrooms2. which statement explains why in a food chain plants are called producers and animals are called consumersa. plants make oxygen and animals use itb. plants use carbon dioxide in animals give it offc. plants make their own food and animals eat other organismsd. plants use energy from a soil and animals make their own food 3. which a biotic factor might be expected to change in an oak forest ecosystem if a disease destroys all of the oak trees a. wind b. rainfall c. gaseous nitrogen d. available sunlight