"Call" on me
This technology was implemented on cell phones so the owner can see who is trying to contact them
Caller ID
This block is used to fortify or even decorate exterior walls, many of them can be bonded together with mortar.
Bricks
One way of tracking people who are missing is to look for this shape, as it is almost never found in nature.
Straight lines
This breed of dog is certainly born to run as it hardly builds up any lactic acid which can cause muscle fatigue, maybe that's why they are used in the Iditarod.
Husky
This is the arbitrary line that establishes the East and West hemispheres on Earth. Follow the line to the other side of the Earth and you have the International Date Line
Prime Meridian
This type of writing is a form of visual art, and is most commonly used on wedding invitations.
Calligraphy
These orange things can be seen at construction sites either as an indicator for the location of underground utilities or to keep people away from something dangerous.
Cones
These shapes are some of the strongest and most efficient shapes in nature, bees create the shapes to store honey.
Hexagon
This land mammal is the fastest on the planet thanks to it's fast twitch muscle fibers.
Cheetah
This line separates the North and South hemispheres
Equator
This phrase is attributed to a man who is trying to court a woman.
Gentleman Caller
This construction material is a simple mixture of water, sand, stones, and cement.
Concrete
The jellyfish uses small barbs that are this shape to sting it's pray.
Triangle
This bird native to north America sprints down manmade trails and paths at blazing speeds.
Road Runner
50% of the human population lives above this line on a globe.
Tropic of Cancer
This word means to show cruel disregard towards others.
Callous
A building needs this to keep walls standing, also it is used as a helpful guide for hanging pictures later.
Framing
All planets and astronomical objects have an orbit in this shape.
Ellipse
This bird from the land down under cannot fly but instead runs at a top speed of 30 mph
Emu
New Zealand, Swaziland, Eswatini, and Uruguay are the only nations in the world that are completely south of this line.
Tropic of Capricorn
This Caribbean dish is made of indigenous vegetables, most commonly amaranth, then stewed and served.
Callaloo
This object can be plastic or concrete, they are commonly placed under a road or driveway to provide drainage.
Culvert
Snow flakes are unique shapes because they actually are a type of this geometric object, where no matter how far you zoom in it will always look the same.
Fractal
The wooly mammoth was hunted to extinction thanks to this animals great running ability and incredible endurance.
Human
By definition this state was bounded by latitudes 37 degrees North and 47 degrees North; as well as 102 degrees West and 109 degrees West. However while surveying this rectangular shape became warped into an hexaheptaenneacontakaiheptagon or a shape with 697 sides.
Colorado