Answer:
Cold fronts form when a cooler air mass moves into an area of warmer air in the wake of a developing extratropical cyclone. The warmer air interacts with the cooler air mass along the boundary, and usually produces precipitation
Answer:
Heart disease is a non communicable disease because it does not happen due to any virus or bacteria.
Explanation:
Diseases caused due to virus and bacteria are mostly communicable. Heart Disease is caused due to poor supply of nutrients in hearts.
Answer:
absorb vitamins (especially Vitamin K)
Explanation:
The large intestine also helps in absorption of vitamins made by bacteria that normally live in the large intestine. These are friendly bacteria called commensal bacteria. There are over 700 species of bacteria that perform a variety of functions.
Bacteria in the large intestine also make some important substances, such as vitamin K, which plays an important role in blood clotting.
Answer:
C
Explanation:
The moon revovles around the sun. While the moon goes around the earth, some half of the moon will be lighted up by the sun. The other side will always be in darkness. Hope this helps :)