Science
beneficial
helpful or useful
ancient
from a long time ago
assist
to help
guilty
feeling bad because you have done something wrong
immediately
now or without waiting
widespread
affecting or including a lot of people or places
occur
to happen
maintain
to make a situation or activity continue in the same way
persist
to continue to exist
make up
to invent a story that isn't true
contact
communication with someone
affect
to cause a change in someone or something
abandon
to leave behind or run away from something
prove
to show that something is true
curiosity
the feeling of wanting to know or learn more about something
detect
to discover or notice something
resist
to fight or oppose something or someone
trace
to find the origin of something
reveal
to give someone information that is surprising or that was previously secret
put off
to decide to do something later