It's the monthly cycle which occurs in female during which unfertilized ovum dies and pass out through vagina in the form of blood.
The answer is mitochondria
A catalyst decreases the activation energy and increases reaction rate that is needed.
The answer is the vitamin B 6 supplement can cause irreversible nerve damage. Taking too many vitamins can cause also a toxic effect on our body. Too much vitamin B6 can also cause oversensitivity to sunlight, which can lead to skin rashes and numbness, as well as nausea, vomiting, abdominal pain, loss of appetite, and abnormal liver function.
The answer is b because the global warming only gets caused by the decrease of in consumer spending .
