Every cell<span> in your body contains organelles (structures that have specific functions). Just like organs in the body, each </span>organelle<span> contributes in its own way to helping the cell function well as a whole. The </span>nucleus<span>, </span>mitochondria<span> and </span>chloroplasts<span> are all organelles.</span>
Answer: The Magdeburg hemispheres are a pair of large copper hemispheres, with mating rims. They were used to demonstrate the power of atmospheric pressure. When the rims were sealed with grease and the air was pumped out, the sphere contained a vacuum and could not be pulled apart by teams of horses.
Explanation:
The endometrium is the inner lining. The myometrium is the thick middle muscle. The serosa is the outer smooth layer.
Answer:
Taking more samples from different parts of an acre.
Explanation:
Validity and accuracy of the data is crucial for any serious research. In this particular case, the most accurate data would be obtained if earthworms would be counted on the whole acre. Of course, this would consume lot of time, people, money etc. That's why methods for estimation are used. Estimation best works with large number of samples. Since one acre equals over 4000 square meters, taking only five samples from such a big area is simply not enough for obtaining valid data.
One of the possible ways to improve estimation is to take more samples per acre while avoiding taking adjacent samples because it could be possible that number of earthworms in one part of an acre is increased (or decreased) for any reason, which would lead us to wrong conclusion.
Answer: The answer is the rental system.
Explanation: It produces, stores and eliminates urine and the fluid waste excreted by the kidneys.
