(of a person) eager to try new ideas, exciting things, and take risks
a small area or bubble filled with air, often found in liquids, materials, or spaces where air is trapped
a man-made object, tool, weapon, etc. that was created in the past and holds historical or cultural significance
having the simplest form without extra complexity
someone who has just started to learn or do something; a person who is new to a field or activity
the action of taking air into the lungs and sending it out again
giving attention or thought to what we are doing to avoid doing something wrong, hurting ourselves, or damaging something
a hole or chamber formed underground naturally by rocks gradually breaking down over time
having a temperature lower than the human body's average temperature
to mix in order to make a single unit
a series of lessons or lectures on a particular subject
the flow or movement of water or a liquid in a specific direction
having very little or no light
having a great distance from the surface to the bottom
the activity or sport of jumping into water from a diving board, with the head and arms first
someone who jumps into a body of water as a sport
existed or happened a time long ago
the necessary things that you need for doing a particular activity or job
to visit places one has never seen before
an individual with a great amount of knowledge, skill, or training in a particular field
known by a lot of people
the preserved remains or traces of ancient plants, animals, or other organisms found in rock
(of water) free of salt
providing entertainment or amusement
a collection of equipment or tools required for a specific activity, operation, or sport
a person who leads or advises others on the way to go
to deal with a situation or problem successfully
to deal with a situation or problem successfully
a hard hat worn by soldiers, bikers, etc. for protection
a country located in North America that is bordered by the United States to the north
having a limited distance between opposite sides
originating from or created by nature, not made or caused by humans
receiving a lot of love and attention from many people
a solid material forming part of the earth's surface, often made of one or more minerals
protected from any danger
in a way that avoids harm or danger
a device (trade name Aqua-Lung) that lets divers breathe under water; scuba is an acronym for self-contained underwater breathing apparatus
having a short distance from the surface to the bottom
situated or happening below the surface of a body of water
the application of scientific knowledge for practical purposes, especially in industry
