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svlad2 [7]
3 years ago
8

The principal characteristic that determines whether an aquatic ecosystem is classified as marine or freshwater is _______.

Biology
2 answers:
Ira Lisetskai [31]3 years ago
7 0

Answer:

Salinity

Explanation

The salt concentration of the water

max2010maxim [7]3 years ago
5 0

Salinity refers to the principal characteristic that determines whether an aquatic ecosystem is classified as marine or freshwater. It is the measure of all the salts dissolved in water.

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Water is polar. Lipids are non-polar. 
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If someone could dig a safe tunnel through the earth how long would it take to free fall to the center?
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Answer: A scenario often presented to introductory physics classes is that of a "gravity tunnel" — a tube drilled from one side of the Earth to the other through the planet's center. The answer taught for nearly a half-century for how long a fall through such a hole would take was about 42 minutes and 12 seconds.

Explanation: However, solar and lunar gravity, which also perturb orbiting satellites, would eventually pull you into the tunnel wall anyway [source: Darling ]. Strike a chord: Fun fact: A straight line from any point to any other point through the planet would take the same amount of time to fall through like a tunnel through Earth's center.

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2 years ago
Proceso de ingestion en humanos cual es?
Afina-wow [57]

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La ingestión es la introducción de la comida en el aparato digestivo al servicio de la alimentación o de la hidratación, y en la forma que nos es más familiar se realiza a través de la boca.

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7 0
3 years ago
Which of the following nitrogen bases is unique to RNA?
Shkiper50 [21]
<h2>Answer</h2>

The right option is (A).

<h2>Explanation</h2>

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3 years ago
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aleksandrvk [35]

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air

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3 0
3 years ago
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