Oceanic Crust is the thinnest
Answer: Pulmonary veins.
Explanation:
Pulmonary vein receives oxygen-rich blood from the lungs into the left atrium where it is pumped into the left ventricle, the aorta and then further distributed to the rest of body.
Answer:
The organisms in the marine ecosystem converts carbon dioxide to oxygen faster than organisms in other ecosystems.
Explanation:
Simply the organism in the ecosystem seaweed and phytoplanktons makes use of CO2, water, and sunlight to synthesize foods for energy production.During this processes, O2 is liberated as by products from the photolysis of water. These marine photsynthesizers ensures abundant supply of oxygen to the atmosphere.
The answer is A.,.....................
