Answer:
Carbon dioxide
Explanation:
Burning fossil fuels and biomass releases co2 a greenhouse gas
Most of the ATP made during cellular respiration is produced in which organelle is mitochondria. This will make the correct answer C.
D. proteins is the right answer
Tundra ecosystem is cold and sunlight is short. Plants need sunglight and warmth in order to grow, thus plants in tundra are shorter and cloers to the ground since the ground is warmer than the air