Each of these things — along with every other organism on Earth — contains the molecular instructions for life, called deoxyribonucleic acid or DNA. Although each organism's DNA is unique, all DNA is composed of the same nitrogen-based molecules.
Answer:Option A
Explanation: The snail breaths in the O2 which will then exhale CO2, therefore the plant will take that and process the CO2 back into O2.
(option d) to use technology to improve quality of life.
Weight is basically the heaviness of a person or thing.