Plants release the waste carbon dioxide during cellular respiration and oxygen during photosynthesis.
Answer:
(1) Nitrite poisoning
(2) Its cause is elevated levels of nitrite in the pond or culture system water.
Answer:
The Y chromosome is present in males, who have one X and one Y chromosome, while females have two X chromosomes.Explanation:
The last option: over tens of millions of years, the giant supercontinent Pangaea began to slowly drift apart forming the continents