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zimovet [89]
3 years ago
10

Cosmologists are scientists who study stars, galaxies, black holes, and other objects in the universe. In order to study the bil

lions and billions of stars, cosmologists use highly advanced telescopes and create computer models to trace the stars’ motion. What is one type of limitation that requires cosmologists to use these telescopes?
Biology
1 answer:
VashaNatasha [74]3 years ago
3 0

Answer:

The Cosmologist have to purchase use telescope so they can see the outside world.

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Like all flowering plants, the snapdragon must be pollinated to reproduce, but its flowers are closed. A bumblebee has just enou
Lelechka [254]

Answer:

<h2>Coevolution</h2>

Explanation:

Coevolution : It is the influence of closely associated species on each other in their evolution, they affect each other.

In coevolution , two or more species reciprocally affect  evolution of  each other by natural selection.

 

Coevolution Examples:

There are lots of examples of coevolution, some are here

i) coevolution of Predator-Prey , this relationship is one of the most common examples of coevolution.

ii) coevolution of  Herbivores and plants,

iii)  coevolution of Acacia ants and Acacias and

iii)  coevolution of Flowering Plants and Pollinators and many others.

5 0
3 years ago
During which time period was Earth a ball of hot liquid?
IgorLugansk [536]

Answer:

Approximately 4.5 billion years ago (The Hadean Eon) .

Explanation:

The Geologic Timescale's "Hadean" era, named for Hades (Hell, well, we weren't feeling very imaginative that day), encompasses the Earth's origins. According to the evidence we currently have, the Earth's surface at that time was mostly made up of lava lakes and molten rock.

How would that appear? The first 500 Ma of Earth's history have left very little stuff behind. You may, however, take a peek at our moon, which similarly went through a lava lake period before freezing. You'll see that it has both dark and bright landscape.

The lighter material is known as highlands and is primarily composed of anorthosite. Anorthose, a kind of plagioclase feldspar, is the main component of the igneous rock known as anorthosite. According to what we know, the Moon too had a lava lake era. Liquid rocks exposed at the surface were cooling and fractionally crystallizing throughout this lengthy period. A certain order of minerals was developing. And these minerals were dividing up according to the density of the melt; less dense minerals, like plagioclase (Anorthose is a plagioclase), floated to the surface in a sort of incandescent crystal slush slurry and formed a sort of lid there. Denser minerals, like olivines, were sinking to the bottom of the lava lake to form cumulates. As the lava lakes cooled, anorthosite piled on top in successive layers, thickening the mass of floating crystals. Large meteor impacts occasionally pierced this anorthosite crust, and part of the thicker (and darker) underlying liquid accumulated in the ensuing craters to produce those roundish dark patches (Maria), which are now filled with basalt.

After the lava lakes froze/crystallized over, such characteristics were maintained since there was no significant tectonic activity on the Moon (except for the local meteor impacts which screw things up a bit).

6 0
2 years ago
According to Evans-Pritchard, Azande commoners did not accuse chiefs of witchcraft because
NemiM [27]
According to Evans-Pritchard, Azande commoners did not accuse chiefs of witchcraft because w<span>itches bewitch people they envy, and chiefs do not envy commoners.
There was no reason for chiefs to envy commoners and be jealous of what they have, because usually they had much more than the commoners. There wasn't much for them to envy, and thus to turn to witchcraft, according to the commoners in these tribes.
</span>
8 0
3 years ago
An object sitting on a high shelf has no energy. Agree or Disagree
taurus [48]
Agree 
it is no active to use energy to move or be in motion 
6 0
3 years ago
Read 2 more answers
Homeostasis is controlled by what feedback mechanism? how does it work?
son4ous [18]
It is controlled by negative feedback loop.Let's say you have high glucose level in your blood,that will be registered and pancreas will produce more insulin to keep it in the normal range.Therefore by negative feedback loop it will regulate homeostasis
6 0
4 years ago
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