A beleza está na natureza.

A is the feminine singular definite article, meaning the.

So a beleza literally means the beauty.

In Portuguese, it is very common to use the definite article with abstract nouns in general statements, more often than in English. So where English might simply say Beauty, Portuguese often says A beleza.

You can tell it is feminine because it takes the article a, not o.

• a beleza = the beauty
• uma beleza = a beauty

Also, many nouns ending in -eza are feminine, such as:

• a beleza
• a natureza
• a riqueza

That said, it is best to learn nouns together with their article.

For the same reason: it takes the feminine article a.

In the sentence, you do not see a natureza written separately because it is inside the contraction na:

• em + a = na
• na natureza = in the nature / in nature

So natureza is feminine singular, and that is why na is used.

Na is a contraction of:

• em = in / on / at
• a = the (feminine singular)

So:

• em a natureza → na natureza

This contraction is required in normal Portuguese.

Other common examples:

• no = em + o
• da = de + a
• do = de + o

So na natureza means in nature or more literally in the nature.

Because estar is the normal verb for location, even when the location is not temporary.

A lot of learners hear the rule ser = permanent, estar = temporary, but that is only a rough shortcut. It is not the full story.

Here, A beleza está na natureza means that beauty is found in nature, or located in nature in a figurative sense. That is why estar sounds natural.

Compare:

• A beleza está na natureza. = Beauty is in nature.
• A beleza é a natureza. = Beauty is nature.
  This means something different: it equates the two ideas.

So está is the right choice here.

Not always. That is a very simplified rule.

A better way to think about it:

• ser often describes identity, essence, definition, origin, time, etc.
• estar often describes location, condition, or how something is situated

Location almost always uses estar, even for things that are permanently somewhere.

For example:

• O Rio de Janeiro está no Brasil.
• A mesa está na cozinha.

Neither of those has to be temporary.

So in A beleza está na natureza, estar is being used for figurative location, not temporary state.

The accent mark shows which syllable is stressed:

• está → stress on the last syllable

It also helps distinguish it from esta, which is a different word:

• esta = this (feminine)
• está = is from estar

So the accent is important both for pronunciation and meaning.

A common Brazilian pronunciation is approximately:

ah beh-LEH-zah es-TAH nah nah-too-REH-zah

A more IPA-like version is:

[a beˈlezɐ esˈta na natuˈɾezɐ]

A few useful pronunciation notes:

• beleza: the z sounds like z in zero
• está: stress is on the last syllable
• natureza: the r between vowels is usually a light tap, somewhat like the tt in American butter
• final unstressed a often sounds softer, closer to uh

In standard Portuguese, no. You should use the contraction na.

So:

• na natureza ✅
• em a natureza ❌

Portuguese uses these contractions very regularly, so it is important to get used to them.

Yes, but the original order is the most natural and neutral:

• A beleza está na natureza.

You may also see something like:

• Na natureza está a beleza.

That sounds more literary, poetic, or emphatic. It highlights na natureza first.

For everyday neutral speech, the original sentence is the best choice.

Yes. That is a natural sentence too, but it is not exactly the same structure.

• A beleza está na natureza. = Beauty is in nature.
• A natureza é bela. = Nature is beautiful.

The second one describes nature directly with the adjective bela.
The original sentence expresses the idea in a more abstract or poetic way.

Yes. In Brazilian Portuguese, beleza can also be used informally as an expression meaning something like:

• okay
• all right
• cool

For example:

• Beleza! = Okay! / Great!

But in A beleza está na natureza, beleza is clearly the noun beauty.