You come home one night to find a burglar in your house. your heart starts racing and you begin to perspire. these physical reactions are triggered by the: question 19 options:

Sympathetic nervous system

These physical reactions are triggered by the sympathetic nervous system.

The sympathetic nervous system is part of the autonomic nervous system that triggers the fight or flight response. The sympathetic nervous system functions through various interconnected neurons in the body and it is responsible for preparing the body for physical and mental activity. The sympathetic nervous system causes the heart to beat faster and stronger, opens the airways for easy breathe, and prevents digestion.

for the points

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.