they are twins that happen naturally rather than through in vitro fertilization.
spontaneous
The antonym of spontaneous is planned or intentional.
If G < 0, the reaction is spontaneous.
Spontaneous is an adjective. The related noun may be "spontaneousness" or "spontaneity."
Candle burning is a spontaneous reaction. It is an exothermic reaction that occurs naturally and releases heat and light energy as the wax is being oxidized in the presence of oxygen from the air.
spontaneous
In the context of "spontaneous vs non-spontaneous," a reaction is considered spontaneous if it occurs on its own without needing external influence. On the other hand, a non-spontaneous reaction requires external energy input to occur.
spontaneous ACCOUNT
'Spontaneous' means "arising from a momentary impulse". There is no animal which represents 'spontaneous'.
With identical twins, one egg (zygote) from the mother is fertilized by one sperm from the father, and then very early in development the embryo splits and two fetuses grow. Spontaneous division of the zygote into two embryos is not considered to be a hereditary trait, but rather a spontaneous or random event. If the zygote splits very early (in the first 2 days after fertilization) they may develop separate placentas (chorion) and separate sacs (amnion). These are called dichorionic, diamniotic (or 'di/di') twins. While all fraternal twins are 'di/di', this occurs 20 - 30% of the time in identical twins. Most of the time in identical twins the zygote will split after 2 days, resulting in a shared placenta, but two separate sacs. These are called monochorionic, diamniotic ('mono/di') twins.These twins are very similar genetically, and share a single afterbirth. Very occasionally, twins will also share the same sac (fluid cavity). In about 1% of identical twins the splitting occurs late enough to result in both a shared placenta and a shared sac. These are called monochorionic, monoamniotic ('mono/mono') twins.
Well, there are several special features found in Gemini's; -Chatty -Flirty -Spontaneous -Twins (there's always somebody who has the same/close personality as you) -Outgoing -Wild side ;)
The antonym of spontaneous is planned or intentional.
A tween can be spontaneous by being themselves.
Spontaneous, hasty, rash.
We're part of such a spontaneous generation!
Spontaneous Inventions was created in 1986.
Spontaneous is an adjective--a spontaneousperson.