Answer:It would be all of them
Explanation: Because they all give ideas on how "could a school reduce its use of energy resources
B. a form of gene is the correct answer
The answer to this question would be: (4)carnivoresFood made by autotrophs which makes them placed first in food webs as they produce food. After that, the herbivore can digest the food made by autotroph, makes them places as the first consumer. Carnivores is the organism that eats meat, makes them the last consumer.