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Macroevolution

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16y ago

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How the fossils record supports the theory of punctuated equilibrium?

the fossils show massive change at one time (for instance the Grand Canyon; this massive change occurs usually from significant weather/environmental events) , and during the periods between the significant changes not much evolution (changes in genetic expression/genes) occurs.


In evolutionary terms the more closely two organisms are the?

In evolutionary terms, the more closely two organisms are related, the more recent their common ancestor and the more genetic material they share. This relationship is reflected in their DNA sequences, anatomy, and developmental pathways, indicating a closer evolutionary history. Organisms that are more closely related are usually classified into the same taxonomic groups, like species or genera.


How do scientists use geographical distribution to determine the evolutionary relationship?

Organisms that are close geographically are usually more closely related than those that evolved in widely separated areas of the world.


Do elephants lay down?

Yes, elephants do lie down to rest, usually for short periods of time. They can also lie down to sleep, especially in a safe and comfortable environment.


What do periods on the geologic time scale represent?

Periods on the geologic time scale represent units of time that divide eras into smaller segments. They typically last tens of millions of years and are defined by distinctive rock layers and characteristics of the Earth's environment. Each period is marked by significant shifts in global climate, the evolution of life forms, and geological events.

Related Questions

What is the difference between an accident and a disaster?

Accident is one which occurs in a particular area and confined to the limits whereas disaster is an accident spreading to neighbouring areas and usually occurs in largescale.


Why have you missed your last 2 periods if your usually regular?

If you're usually regular, there could be a number of reasons you missed your last 2 periods. The most likely reason is that you are pregnant. However, if you have ruled out pregnancy, stress, illness, diet, and hormonal changes could all be culprits. See your doctor to find the cause and treat the problem.


Can you have normal periods while pregnant?

not usually because if you do have them they are usually lighter than prepregnancy.


When do girls usually get there periods?

About age 14, but they can get it at anytime. It is usually towards the beginning or middle of puberty.


How do you know when your periods are?

uh...yo usually feel it come out...


How man periods does a NCAA basketball game usually have?

2


How many periods do you have on Depo-Provera?

that's an answer that varies for everyone, usually your periods are lighter and shorter and can sometimes alltogether stop


How many periods are there in a day?

no one knows how many periods are in a day but a regular period usually lasts about a week or so.


Normal changes in late adulthood usually include a (or an)?

Normal changes in late adulthood usually include a (or an)


What do the periods the geologic time scale represent?

Usually, they represent periods between extinction events, where a particular type of lifeform was dominant.


When does your periods return after a miscarriage?

Usually about 4-6 weeks afterward.


How do you know when your going tostart your periods?

You usually get a lot of cramps and then it will happen