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Rufina [12.5K]
3 years ago
5

What do scientists call a gavitationally bound system of two stars in which

Biology
1 answer:
Nimfa-mama [501]3 years ago
7 0

Answer:

Visual binaries are two stars with a wide enough separation that both can be viewed through a telescope, or even with a pair of binoculars. Five to 10 percent of visible stars are visual binaries. Spectroscopic binaries appear close even when viewed through a telescope.

Explanation:

pls mark brainliest

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the skin is the largest organ in your body which of the following describe the function of the skin???​
denpristay [2]

Answer:

where's the following?

7 0
3 years ago
What is the difference between good ‘seeing’ and good ‘transparency’? Give one condition for each.
iren [92.7K]

Answer:

Transparency is the <u><em>opacity of the atmosphere</em></u>, or how clear it is. Moisture and humidity lower the transparency, as does smoke or other kinds of pollution. It’s not entirely unlike light pollution in that it washes out the fainter details of astronomical targets. In fact, poor transparency typically makes light pollution worse because it scatters the light around instead of letting it escape into space away from your cameras and optics.

Transparency usually gets better with altitude, because you're looking through less air. That's why high altitudes are prized for observatories and star parties.

Transparency is also usually very good after a rainstorm has come through to clear all of the particulates out of the air. This is reason number one I figured my second friend had it right at the star party.

Seeing, on the other hand, is a measure of <u><em>atmospheric turbulence</em></u>. We know that if we take a photo of a fast-moving subject, such as at a sporting event, with a low shutter speed, we'll get a blurry image. So what happens when you have to take a very long dark-sky photo and the stars are jumping all about due to atmospheric turbulence? That’s right, blurry stars and deep sky objects.

Seeing is typically better in places where the geography is very flat. The air masses moving over the land encounter few obstacles and flow more smoothly (sometimes called a laminar flow). In Florida, the winds coming over the mountains gets all mixed up like a creek flowing over big boulders, which makes for terrible seeing.

HOPE IT HELPS

6 0
3 years ago
Imagine that you are studying alien life-forms discovered on a distant planet. While geneticists are working out the genetic cod
34kurt

A phylogenetic tree based on morphology can be constructed using the presence or lack of characteristics. In this illustration, all aliens except the outgroup possess a spring tail, all aliens possess a fourth eye, two aliens possess two tails, and one alien has a grasping hand. The evolutionary relationships between these organisms can be hypothesized using these traits.

Aliens:

  • We can determine whether the following traits are present in the remaining aliens by using the group of aliens with the tail stalk as our test group.
  • Out group: a group that is maintained apart from the clade but is yet connected to it.
  • If we provide these aliens alphabets for ease of understanding, then aliens will be like in order.
  • We can use the group of aliens with the tail stalk as our test group to see if the following characteristics are present in the remaining aliens.
  • A group that is kept separate from the clade while yet being affiliated with it is known as an out group.
  • The aliens will appear to be in order if we give them alphabets for simplicity.

Learn more about aliens here brainly.com/question/24183412

#SPJ4

6 0
1 year ago
Mutations occur when
jek_recluse [69]
I got this one!!! The answer is C.Mistakes are made when chromosomes are copied. Did this not long ago!! Hope this helped!!!! :)
4 0
3 years ago
What are some limiting factors for the rabbit population?
ivann1987 [24]
Food availability 
<span>Predator populations </span>
<span>Disease and parasites</span>
6 0
3 years ago
Read 2 more answers
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