Answer:
Carbon dioxide
Explanation:. Carbon dioxide enters through tiny holes in a plant's leaves, flowers, branches, stems, and roots. Plants also require water to make their food.
Answer:
Meiosis!
Explanation:
Meiosis results in 4 haploid daughter cells.
Yeah that's possible in some rare cases
Answer:
When organisms use organic matter for cellular respiration, ALL the matter goes back into carbon dioxide, water, and minerals, while ALL the energy leaves the ecosystem as heat (which is ultimately radiated out into space). So matter cycles, energy flows through ecosystems.
Its function is to provide energy for many cellular reactions.