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Allisa [31]
3 years ago
7

Which of these is a biotic factor of an ecosystem?

Biology
2 answers:
lisov135 [29]3 years ago
7 0
Biotic means that it came from or has been produced/has been in relation with an organism. So your answer would be THE BACTERIA THAT LIVES IN THE INTESTINE OF A RABBT, it was the interaction of 2 things within them selves.
yawa3891 [41]3 years ago
6 0
B, bacteria.
Bacteria are organisms/alive, so they are biotic factors.
Water vapor and rocks on the other hand are not alive, so they are called abiotic factors.
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A rock can be highly permeable but also non-porous. <br> True <br> False
vekshin1
<h3><u>Answer;</u></h3>

The above statement is <u>false</u>

<h3><u>Explanation</u>;</h3>
  • Rocks have different porosity and permeability characteristics, which means that water does not move around the same way in all rocks below ground.
  • Permeability greater than 250 mD are considered very good, while permeability less than 1 mD are considered poor.
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Identify the cavity that develops entirely from the mesoderm.
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I believe it would be mesentery

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Black_prince [1.1K]

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Hope this helps

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What organelles are surrounded by double membrane?
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2 years ago
When vesicles of the cardiac sarcoplasmic reticulum (CSR) are incubated with ATP Mg^2+ and Ca^2+, they take up Ca^2+ and reach a
abruzzese [7]

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I added 4 and 5 as an attachment due to time constraint.

Explanation:

1. at a steady state ca2+ taken by vesicle = 40n/mol

enclosed volume of CSR = 5μ/mg

concentration of ca2+ in vesicle =

40*10⁻⁶/5x10⁻⁶

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= 8x10⁻⁹mol/L

2. radius of circle =75nM

volume = 150nm

volume of vesicle = 4/3 x pi x r³

= 1.33 x 3.14 x (75x10⁻⁹)³

= 1.77 x 10⁻²¹

when we convert this we get

1.77x10⁻¹⁸L since 1m³ is equal to 100oL

surface area =4x3.14x(75x10⁻⁹)²

= 12.56x5.625⁻¹⁵

= 7.065x10⁻¹⁴m²

this is 7.065x10⁻¹⁰cm²

3. number of vesicle/CSR

= 5x10⁻⁶/1.77x10⁻¹⁸

= 2.824x10¹²

surface are = 2.824x10¹² x7.06x10⁻¹⁰

= 19.95x10²

8 0
3 years ago
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