a small, brown mammal with a covering of sharp spines on its back:

(a)  

to become wider, or to cause something to become wider:

(a)  

a substance that you put on your skin to prevent it from being damaged by the sun:

(a)  

an island, especially in a warm region, where no people live:

(a)  

energy that is produced using the sun, wind, etc., or from crops, rather than using fuels such as oil or coal:

(a)  

an animal that hunts, kills, and eats other animals:

(a)  

a large group of animals of the same type that live and feed together:

(a)  

a sudden violent movement of the earth's surface, sometimes causing great damage:

(a)  

completely dark:

(a)  

a skilled activity in which something is made in a traditional way with the hands rather than being produced by machines in a factory, or an object made by such an activity:

(a)  

(the total amount collected of) a plant such as a grain, fruit, or vegetable grown in large amounts:

(a)  

water supplied to a house by pipes:

(a)  

damage caused to water, air, etc. by harmful substances or waste:

(a)  

a group of people, often of related families, who live together, sharing the same language, culture, and history, especially those who do not live in towns or cities:

(a)  

a type of animal or plant that might stop existing because there are only a few of that type alive:

(a)  

a small light that is held in the hand and usually gets its power from batteries :

(a)  

a device that changes energy from the sun into electricity:

(a)  

to make something warm or hot:

(a)  

a path through a countryside, mountain, or forest area, often made or used for a particular purpose:

(a)