| A | B |
| abandon | to leave someone, especially someone you are responsible for |
| ancestor | a member of your family that lived a long time ago |
| dawn | the time of the beginning of the day when the first light appears |
| detect | to notice or discover something, especially something that is not easily found |
| disaster | a sudden event such as a flood, storm, or accident that causes harm |
| displace | to make a group of people or animals leave a place and go to another |
| drill | to make a hole in something using a drill |
| expand | to become larger in size, number or amount |
| holy | connected with God and religion; sacred |
| identical | exactly the same or very similar |
| inevitable | certain to happen and impossible to avoid |
| laboratory | a special or building in which a scientist does tests or prepares experiments |
| monitor | to carefully watch and check a situation in order to see how it changes |
| preceding | happening or coming before the time, place, or part mentioned |
| precise | exact, clear and correct |
| random | happening or chosen without any definite plan, aim or pattern |
| schedule | a plan of what someone is going to do and when they are going to do it |
| track | to record or study the behavior or development of someone or something |
| witness | to see or experience important events or changes |
| zone | a large area that is different from other areas around it in some way |