The answer is A
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As water soaks through the ground , it first passes through a rock layer that has pores that are mostly filled with air The Zone is called <span>zone of aeration.</span>
Answer:
The respiratory system aids the supply of oxygen to the blood and the evacuation of carbon dioxide. when the heart takes in blood that as shortage of oxygen and abundance of carbon dioxide, the pulmonary arteries pumps such blood to the lungs.
As the lungs increases due to inflow of fresh air from the surroundings, oxygen is transported to enrich low-oxygen blood, and transport the carbon dioxide out of the lungs.
This freshly oxygen rich blood which now have a rich amount of hemoglobin is transported to the heart which then pump or circulated it to the entire body.
Answer:
A stem cell is A. a specialized cell that can divided limitlessly
Explanation:
sorry if i keep answering ur questions im j good at this stuff lol
Answer:
Change occurs in the heredity characteristic of living organism over time.
Explanation:
Change occurs in the heritable characteristics of living organisms with the passage of time is known as evolution. Evolution consist of three basic principles which are variation, heredity, and differential fitness. The organisms evolved with the passage of time due to change in the environmental conditions which able them to survive in that harsh climatic conditions and those which is not evolved can't survive and in the end extinction occur.