to feel pain, usually one that is weak and constant
A broken bone can ache for months even after it is treated.

something that has a big influence on something else
When choosing a job, there are many factors to consider, such as salary and location.

work something out
The students are trying to figure out the magician's trick.

a part of cell in a that controls the development and appearance of a living thing
When someone is good looking, people usually say that they have good genes.

relating to GENES or the scientific study of how a living thing's appearance, growth, and development are determined and transferred between generations
Scientists think the answer might be genetic. In other words, men are just born that way.

to keep track of; to watch in order to notice changes
They will monitor building entrances.

(of machines) to recognize the presence of something
When animals are in danger, they can sense it before it happens.

an organ used for digesting food
The food goes into your stomach.

being healthy and free from disease
Are you doing well lately?