In biology and ecology, an ecocline or simply cline (from Greek: κλίνω "to possess or exhibit gradient, to lean") describes an ecotone in which a series of biocommunities display a continuous gradient. The term was coined by the English evolutionary biologist Julian Huxley in 1938.
More technically, clines consist of ecotypes or forms of species that exhibit gradual phenotypic and/or genetic differences over a geographical area, typically as a result of environmental heterogeneity. Genetically, clines result from the change of allele frequencies within the gene pool of the group of taxa in question. Clines may manifest in time and/or space.
In ecology, spatial clines have led to gradient analysis where the abundance and distribution of organisms is rendered by sinusoidal curves on the plane. From these curves can be extracted that populations occupy zones of maximum and minimum presence, according to their special needs and tolerances imposed by their environment.
i opened up your letter
when things were looking good
you said goodbye in glitter
i guess i knew you would
be the kind with hearts on her eye's
you're the junior prom queen in disguise
you can go now that i know
that I will be ok alone
i took you out to dinner
romance and candlelight
2 pills and bottled water
suppress your appetite
it's the way your telephones ring
when i'm sharing an epiphany
you should go now that i know
that i will be ok alone
you made me feel
like i was someone you loved for real
but now i find that you're
handing out your candy valentines all over town
what a sweet letdown
you made me feel
like i was someone you loved for real
but now i find that you're
handing out your candy valentines all over town
a repeat letdown
so i tore up your letter
i lit a cigarette
no reason to remember
so easy to forget
all the times you straightened my hair
now i stay home watching millionaire
all day, i think i can say
that i will be i will be ok alone
you made me feel
like i was someone you loved for real
but now i find that you're
handing out your candy valentines all over town