The red color of the Grand Canyon and other geological features is caused by hematite or red ochre, both forms of iron oxide. The red sky at sunset and sunrise is caused by an optical effect known as Rayleigh scattering, which, when the sun is low or below the horizon, increases the red-wavelength light that reaches the eye.
The color of autumn leaves is caused by pigments called anthocyanins, which are produced towards the end of summer, when the green chlorophyll is no longer produced.
It could be that they are trying to keep something in their past hidden, are covering up a problem or issue that could be on-going but has not yet revealed itself in your relationship, and/or they are not being honest about their commitment and intentions for the relationship," says Toni Coleman, a psychotherapist and relationship coach."If it feels as though your partner is resistant to introducing you to their close family and friends, this can glaring red flag," says Rhonda Richards-Smith, a licensed psychotherapist and relationship expert.
"It could just be nerves or a desire to keep others from interfering in your new relationship, but it can also indicate that they don't see the two of you together for the long haul.
The Australian flag was adopted in 1901 and the British Blue Ensign in the left top corner shows its historical linkage.
The large star represents the Federal Commonwealth and the five smaller stars the Southern Cross Constellation.
The white and blue colors have become the national colors of Greece.
But others are still caught up in memories that may prove to be stumbling blocks for them in the future and in your relationship," explains Rhonda Milrad, founder and CEO of Relationup.
RELATED: 15 "Red Flags" Married Couples Ignored But Had No Impact on Their Relationship"When two people that care about each other get together, they want to know everything about the other person — what makes them tick, why they like what they like, what their childhood was like, etc.
But before you go out and commit yourself to a whole evening of bad dating, why not familiarise yourself with some of the ‘red flags’ of a bad date.
Users on question-and-answer website Quora shared some of their biggest dating bugbears.