It is true that amoebas prey upon algae in aquatic environments.
Answer:
it maintains this because of more exchange points on the cell with more surface area comes more ports of entry and exit for materials rather a simple concept
Explanation:
<span>There are three different cavities, the thoracic, the abdominal and the pelvic cavity. Out of these three cavities the abdominal cavity has no bony protection. The thoracic cavity is protected by your ribs and the pelvic bones protect the pelvic cavity. If you think about your abdominal region its fairly obvious that there are no bones to protect it, the only bones in that area is your spine and that does not protect anything.</span>
<h3><u>Answer;</u></h3>
Potassium-40 has a half life of 1.25 billion years.
<h3><u>Explanation;</u></h3>
New amount = Original amount × (1/2)^n ; where n is the number of half lives.
Original amount is 50 atoms
New amount is 25 atoms
Therefore;
25 = 50 × (1/2)^n
1/2 = (1/2)^n
Thus; n = 1
n = 1 which is equivalent to 1.25 billion years
Therefore;
<u>Potassium-40 has a half life of 1.25 billion years.</u>