Answer:
The skin disease suggests that the father contributed with the extra X chromosome. It means, the nondisjunction ocurred during the sperm formation, giving as a product of meiosis II probably two normal sperm, one with 22 chromosomes and one with 24 chromosomes (the extra X).
Explanation:
Answer:
The right answer is false. There are three different groups of phylum for worms
Explanation:
Answer:
In the past few decades, Carbon dioxide levels has been rising.
Explanation:
- Rising levels of Carbon dioxide has become an immediate concern for the Environmentalists.
- This is because carbon dioxide is a green house gas and risen levels of green house gases can lead to unusual warming up of the Earth's Atmosphere.
- This phenomenon is termed as Global warming.
- Global warming can lead to seasonal variation and melting of the ice caps to flood several continents.
- In Last few decades The levels of Carbon dioxide is rising at an alarming rate.
- This rise occurs due to the to burning of fossil fuels, combustion of fuels in automobiles, Deforestation etc
- An immediate step is needed to check this addition of carbon dioxide.
Answer:
Option C. It reduces the need for artificial fertilizers.
Explanation:
Crop rotation is a practice of growing different types of crop on the same piece of land in a year. Crop rotation is very beneficial for farmers because it reduces the cost of production by not using artificial fertilizers. In crop rotation, farmers grow leguminous crop in one season. Leguminous crop has the ability to produce fertilizer with the help of bacteria which is present in the nodules of roots. This fertilizer is enough for leguminous crop as well as the next crop so there is no need of artificial fertilizers.
