Questions

All proteins, carbohydrates and fats are macronutrients that we need to make living. They contribute to 90% of the dry weight of our diet. 

From the given options, Excess carbohydrates and fats are stored; excess proteins are not.

‘dispensed’ should be followed by ‘off’. Dispensed off means given away, therefore the sentence means that his services are no longer needed.

The nervous system is the part of an animal that coordinates its actions by transmitting signals to and from different parts of its body.

In vertebrates it consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibers or axons, that connect the CNS to every other part of the body.

The nervous system has three main functions:

* To collect sensory input from the body and external environment.

* To process and interpret the sensory input.

* To respond appropriately to the sensory input.

In 1769 Arkwright patented the invention that made him rich, and his country an economic powerhouse: The spinning frame. The spinning frame was a device that could produce stronger threads for yarns.

The least penetrating power ray is Alpha rays.

A search engine is a set of programs which enables users to search documents and files ihe world wide web.

Common search engines are Google, Yahoo, Bing,...