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photoshop1234 [79]
3 years ago
11

20. Most of today’s organisms could not have lived on Earth 3.6 billion years ago because there was no _____ in the air then.

Biology
1 answer:
Alinara [238K]3 years ago
6 0
Oxygen, mostly bacteria and they ran on glycolosis
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Explanation:

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2 years ago
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Que signifie ADN et comment on le prouve?
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Answer:

<h3>Qu'est-ce que l'ADN ?</h3>

L'ADN (acide désoxyribonucléique) est un type d'acide nucléique qui se distingue par le stockage de l'information génétique de la grande majorité des êtres vivants. Cette molécule est formée de nucléotides et a généralement la forme d'une double hélice.

Il est nécessaire de prélever des échantillons de certains fluides corporels qui peuvent être du sang, de la salive, des ongles, des cheveux ou du sperme. À l'aide de techniques de laboratoire sophistiquées, l'ADN des échantillons est isolé, puis une cartographie est effectuée, ce qui est fait par des équipements appelés "Séquenceurs d'ADN".

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J'espère t'avoir aidé, bonnes études !

7 0
1 year ago
The heart is a cone-shaped, muscular pump located within the _________ _______.
jonny [76]
The heart is a hollow cone shaped muscular pump within the thoracic cavity
7 0
2 years ago
Do you have siblings? You may have similar traits, but you are also very different. We exhibit genetic variation, even in the sa
ladessa [460]

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Explanation:

3 0
3 years ago
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denpristay [2]

Answer: C . They should map out a grid to systematically look for evidence.

Explanation:

As a crime has been committed, the investigators do not need a search warrant so there is no need to ask a Judge for one so option A is incorrect.

It is best if evidence is searched for in different locations not just the primary scene so option B is incorrect.

Setting up a grip to enable the systematic analysis of evidence is their most likely course of action so option C is correct.

Even if the case is not complicated, evidence still needs to be searched for so option D is wrong.

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