Answer:
The inward flow of sodium ions increases the concentration of positively charged cations in the cell and causes depolarization, where the potential of the cell is higher than the cell's resting potential. The sodium channels close at the peak of the action potential, while potassium continues to leave the cell.
Explanation:
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Answer:
the chromosome are found in the nucleus of a body cell in pair
Answer:
1. Leads to mixing of genetic materials hence variation within species
2. Leads to offspring with hybrid viguor that tend to show high and adaptability to environmental conditions.
3. Variations due to sexual reproduction leads to improvement of species hence evolutionary changes that may bring about specialisation
Answer: The answer should be A: Precipitation.
Explanation: When we take a look at this question, it mentions that there is dew, fog, and clouds on the planet. Infiltration would have probably been evaporated from the ground and became a cloud. The dew and fog would be the condensation. The astronomers notice that there is never any rainfall, and precipitation in the water cycle is rainfall. So therefore, the missing part of the water cycle would be precipitation
Answer:
Explanation:
Diseases which spread with communicable are often require exchanged fluid, low quality hygiene, air which is breathed by that person etc.These are often caused by pathogens or germs . Diseases can spread from one animal to another. Ho_o sapiens sapiens(humans) being animals, they may get effected from these too. Examples are;
Ebola(West African)
Zika(caused by mosquitoes)
Chicken pox
Swine flu
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