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3 years ago

Which of these is an abiotic factor of an aquarium ecosystem?

Biology

2 answers:

Galina-37 [17]3 years ago

8 0

Answer:

B: gravel on the bottom of the aquarium

Explanation:

Abiotic Factor means a non-living thing so gravel would be the best option.

alexgriva [62]3 years ago

7 0

Answer:

Explanation:

abiotic factors are nonliving things and gravel is nonliving so that has to be the answer

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assume that life on Mars requires cell potential to be 100mV, and the extracellular concentrations of the three major species ar

svetlana [45]

Answer:

Explanation:

From the information given:

The cell potential on mars E = + 100 mV

By using Goldman's equation:

$E_m = \dfrac{RT}{zF}In \Big (\dfrac{P_K[K^+]_{out}+P_{Na}[Na^+]_{out}+P_{Cl}[Cl^-]_{out} }{P_K[K^+]_{in}+P_{Na}[Na^+]_{in}+ P_{Cl}[Cl^-]_{in}} \Big )$

Let's take a look at the impermeable cell with respect to two species;

and the two species be Na⁺ and Cl⁻

$E_m = \dfrac{RT}{zF} In \dfrac{[K^+]_{out}}{[K^+]_{in}}$

where;

z = ionic charge on the species = + 1

F = faraday constant

∴

$100 \times 10^{-3} = \Big (\dfrac{8.314 \times 298}{1\times 96485} \Big) \mathtt{In} \Big ( \dfrac{4}{[K^+]_{in}} \Big)$

$100 \times 10^{-3} = 0.0257 \Big ( \dfrac{4}{[K^+]_{in}} \Big)$

$3.981= \mathtt{In} \Big ( \dfrac{4}{[K^+]_{in}} \Big)$

$exp ( 3.981) = \dfrac{4}{[K^+]_{in}} \\ \\ 53.57 = \dfrac{4}{[K^+]_{in}}$

$[K^+]_{in} = \dfrac{4}{53.57}$

$[K^+]_{in} = 0.0476$

For [Cl⁻]:

$100 \times 10^{-3} = -0.0257 \ \mathtt{In} \Big ( \dfrac{120}{[Cl^-]_{in}} \Big)$

$-3.981 = \ \mathtt{In} \Big ( \dfrac{120}{[Cl^-]_{in}} \Big)$

$0.01867 = \dfrac{120}{[Cl^-]_{in}}$

$[Cl^-]_{in} = \dfrac{120}{0.01867}$

$[Cl^-]_{in} =6427.4$

For [Na⁺]:

$100 \times 10^{-3} = 0.0257 \Big ( \dfrac{145}{[Na^+]_{in}} \Big)$

$53.57= \Big ( \dfrac{145}{[Na^+]_{in}} \Big)$

$[Na^+]_{in}= 2.70$

6 0

3 years ago

How can you use what you know about chemical reactions to explain what happens to food molecules when you eat?

ValentinkaMS [17]

Answer:

Chemical digestion involves the secretions of enzymes throughout your digestive tract. These enzymes break the chemical bonds that hold food particles together. This allows food to be broken down into small, digestible parts.

Explanation:

7 0

3 years ago

Variation of ecological habitats within a species is characteristic of which type of diversity? a. genetic diversity b. ecosyste

zheka24 [161]

An ecosystem is a geographic area where plants, animals, and the other organisms work for the existence of bubble life.

<h3>Variation of ecological habitats within a species is characteristic of which type of diversity?</h3>

The variation of ecological habitats within a specie is character of the type of diversity is known as Ecosystem Diversity.

Ecosystem is defined as the different kinds of habitats, ecological processes and communities. A biological community is defined by the specie which occupy a specific area and the interactions between the species.

So we can conclude that: An ecosystem is a geographic area where plants, animals, and the other organisms work for the existence of bubble life.

Learn more about Ecological Habitat here: brainly.com/question/7413811

#SPJ1

5 0

1 year ago

Which theme is reinforced in the excerpt below from Shakespeare's Hamlet?

g100num [7]

Answer:

To quote another answer I seen from this same question "I would say that the theme which is reinforced in this excerpt is impossibility of certainty - Hamlet is uncertain what he should do next, and he expresses that uncertainty in this soliloquy. "

Explanation:

Hope this helps :)

3 0

3 years ago

Which of the following explains how water is recycled on Earth? A. Ice gains heat, becomes liquid, and changes back to ice as it

Lunna [17]

Answer:

Its option D. All of the above.

Explanation:

As all the facts and processes causes recycling of water

3 0

3 years ago