Answer:
Option A
Explanation:
As we all know, energy can never be created . Also it can never be destroyed. However, it can only be changed from one form to the other. In this case, when a pool ball is striked by a stick, the kinetic energy of stick is transferred to the ball along with release of sound. Sound is just another form of energy.
Now, when this ball strikes other balls, the same process is repeated i.e the ball strikes another ball and passes on its kinetic energy along with release of sound energy. Every time sound is released, the amount of kinetic energy transferring from one body to other reduces.
Option A is correct
The pH of water is 7 because it contains an equal amount of H+ and OH-ions.
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The answer is C. During one of his explorations, naturalist
Charles Darwin reached the Islands of the Galapagos. He observed that there are
the same species of animals on different islands, but have noticeable
differences. He found in Galapagos, that there were finches, a type of bird,
with different type of beaks. Birds used their beaks to acquire food. It led
him to discover that species developed over time to fit their way of life in
surviving and getting their food.
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Answer:
Secondary sources are more useful than a primary source only when you are reporting, analyzing, discussing or interpreting a primary source.
Make connections: How might having the anther atop a tall filament make it more likely that plants will be pollinated? It gets the pollen grains up higher. That makes it more likely that a visiting insect will pick them up.4. ... When the pollen forms on the stamen, the pistils are not ready to receive it.
