Act as tertiary consumers not sure exactly
hope this helps
Answer:
Its CO2
Explanation:
All marine organisms use oxygen for respiration, which releases energy from carbohydrates and has carbon dioxide and water as byproducts
Ventilation systems are needed in a <span>multicellular organism to actually obtain oxygen and give out carbon dioxide. Without this ventilation system, it would be very difficult for multicellular organisms to survive. It has been also observed that surface diffusion is not enough for a multicellular organism to breath.</span>
It seems to me that the graph indicates that the number of species that have become extinct <span> has increased with increasing human population. I consider the first option as a correct one because lines represented on the graph both go upwards through the same period of time and also they coincide which means they both increased.
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Answer:
The first source is less credible
Explanation:
The first source is less credible because it is from wikipedia and it is an html. Most trusted sources are edu, .org, etc.
