Questions

Biotin is a water-soluble B vitamin, also called vitamin B7 and formerly known as vitamin H or coenzyme R.

The unit of energy in MKS system is Joule.

The principal hormone secreted by the corpus luteum is progesterone. Menstruation is triggered by a drop in the levels of progesterone.

A tenant farmer is one who resides on land owned by a landlord. These farmers would have to share the yield with the landowner in a process known as sharecropping. In the South, these farmers need to have their own tools and animals.

Global warming is the increase in the earth’s average temperature due to release of several greenhouse gases to the atmosphere by humans. Global warming is affecting many parts of the world.

Natural Causes include :

1. Solar Activity

2. Melting Permafrost

3. Forest Fires 

Human made causes include :

1. Deforestation

2. Overpopulation

3. Landfills

4. Mining

5. Fertilizer Use