A is the answer
a replication fork
Hypothesis: If the pH is related to the growth of oysters and oysters are placed in water with varying pH levels to test growth, then (INSERT YOUR LEVELS HERE, MORE BASIC WILL HAVE THE BEST GROWTH, MORE ACIDIC WILL HAVE THE WORST GROWTH. WHAT IT SHOULD LOOK LIKE then the pH of 3 will have the least amount of growth followed by the pH of 5, 7, and 9.). This will happen because a lower pH means less carbonate which oysters require to build their shells. As the acidity rises, oyster's shells will become thinner meaning slower growth and death rates will rise.
Independent Varible: pH (I would probaly also add the pH of what like it should be the pH of water)
Dependent Variable: oyster growth
Cardiovascular disease and cancer are the greatest causes of death in the united states. The given statement is true.
<h3>What is cardiovascular disease?</h3>
Cardiovascular disease is defined as disease related to heart such as high blood pressure, heart attack, and blockage in heart. Cancer is unwanted and unusual division of cell in the form of tumor which is known as cancer.
A circulatory system is defined as a system in the body that consists heart, blood vessels, arteries, veins and blood that all combined together to supply blood to all parts of body and takes up waste material from it.
Circulatory system have four major components and these are heart, veins, arteries, and blood. These are the four components that combined and form cardiovascular system.
Therefore, Cardiovascular disease and cancer are the greatest causes of death in the united states. The given statement is true.
Learn more about cardiovascular disease here:
brainly.com/question/1323797
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