Answer:
Nitrogen-fixing bacteria
Explanation:
These type of bacteria living in the soil or symbiotic interaction with root plants has the ability to transform the atmospheric nitrogen (N2) into ammonia (NH3), in this form many organisms like plants can metabolise. Bacterial genera like <em>Azotobacter </em>spp.<em>, Rhizobium </em>spp.<em>, Azospirilum </em>spp.<em>,</em> etc. can make the transformation of nitrogen by specialized enzymes called nitrogenases.
Answer:
Waves carry energy from one place to another. Because waves carry energy, some waves are used for communication, eg radio and television waves and mobile telephone signals. There are many types of waves including sound waves, water waves and all the parts of the electromagnetic spectrum.
Explanation:
The female organ retains and nourishes the fertilized egg is the uterus.
<span>Mitosis is the cell division that happens in all cells in the human body except sperm and egg cells. They produce diploid cells. While meiosis on the other hand is responsible for the cell division of the gametes, spermatogenesis (sperm cells) and oogenesis (egg cells), such haploid cells. </span>
Answer: option b - 55
Explanation:
Menopause signifies the time in a woman's life when menstruation ends, usually BETWEEN age 45 - 55.
And because of the crucial role played by Oestrogen in menstruation, its LOSS increases the RISK of HEART DISEASE seen in women AFTER MENOPAUSE .
