Answer:
i would say A. Both are needed as a reactant of cellular respiration.
Explanation:
While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water. While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. ... Without oxygen, much less ATP would be produced.Aug 31, 2018
Answer:
it is because there is less oxygen and creatures need more oxygen to perform their work..
hope this helps you ☺️☺️
An omnivore eats both plants and animals!
Badgers, pandas, raccoons, and dogs are examples of omnivores I think!
The state of maintaining a stable internal environment regardless of changing external conditions is called 
.
Answer:
DNA ligase,joins the okazaki fragments together into a single DNA molecule
