Sponges have a pore to squeeze out waste
Answer:Methanol is a poisonous chemical derived through synthetic processes, while commercial ethanol is produced by factory fermentation of food crops.
Explanation:
I can answer the third one:
Photosynthesis takes place in two stages<span>: light-dependent reactions and the Calvin cycle (light-independent reactions).</span>
They all have chromosome disorders (irregular number, extra or missing chromosomes)