Answer: B
Explanation:
i think B because it sounds the most right and the other ones jsut don’t make sense
Answer:
Option C.
Scientist explain the incomplete fossil record because not all organisms become fossils. Processes like erosion and mountain building can change rock layers, causing fossils to be spread over multiple layers or destroyed.
Explanation:
- Fossils are the remains of organisms that are found on the rocks after they die.
- So, no one can be 100% sure about the complete fossil record because of the continuous process like erosion and other natural calamities.
- The sediment must cover any organism's remains to start the fossilization process to start. Most of the organisms start decomposing before this process can be executed.
In order for a genetic mutation in a species in result in the formation of new species what must occur. The new species must be unable to breed with the original species. What is the purpose of DNA polymerase.
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Answer:
Correct option is D.
Explanation:
Our nervous system contain cells which are known as neurons these cells help to send information from the spinal cord, and brain. From receptors sensory nervous receive stimuli, and then help in to transfer this information from cell to cell in the central nervous system.
These cells work by change in voltage potential which is present in plasma membrane. So, after the first channel opens, the movement of many types of ions (both inside and outside the cell) alters the distribution of charges near the second channel, causing it to open.
