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VikaD [51]
3 years ago
11

17. If the cost of separating a mineral from waste rock becomes too great, the mineral may no longer be classified as

Biology
1 answer:
pychu [463]3 years ago
4 0

Answer:

a

Explanation:

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Where does the heating process begin in a hot water heater system?
mote1985 [20]

Answer: Dip tube. This tube, located at the top of the tank, serves as the entry point for water as it flows into the tank. The water then travels to the bottom of the tank, to the area known as the combustion chamber, where the heating process begins.

Explanation: Thats what the internet says, and the internet is almost always right, hope you get it right.

3 0
3 years ago
A geologist is studying two different rhyolite flows to determine if they were erupted at the same time.
ss7ja [257]
Q1. The answer is 1.

It can be calculated using the equation:

 (1/2)ⁿ = x

x - decimal amount remaining, 

n - a number of half-lives.


x = 50% = 50/100 = 0.5

n = ?

(1/2)ⁿ = 0.5

log((1/2)ⁿ) = log(0.5)

n * log(1/2) = log(0.5)

n * log(0.5) = log(0.5)

n = log(0.5)/log(0.5)

n = 1


Q10. The answer is 2.


It can be calculated using the equation:

 (1/2)ⁿ = x

x - decimal amount remaining, 

n - a number of half-lives.


Rhyolite #2 has 25% of the parent H remaining:

x = 25% = 25/100 = 0.25

n = ?

(1/2)ⁿ = 0.25

log((1/2)ⁿ) = log(0.25)

n * log(1/2) = log(0.25)

n * log(0.5) = log(0.25)

n = log(0.25)/log(0.5)

n = -0.602 / - 0.301

n = 2



Q3. The answer is 100 million years.


A number of half-lives (n) is a quotient of total time elapsed (t) and length of half-life (H):

n = t/H

n = 1

t = ?

H = 100 000 000 years


n = t/H

t = n * H

t = 1 * 100 000 000 years

t = 100 000 000 years<span>

</span>

4 0
4 years ago
CAN ANYONE PLS ANSWER DIS!!!! THE OTHER ONES ARE THE NOTES!!
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  1. Prokaryotic cells have a cell wall surrounding their cell membrane .The Prokaryotic cells don't have a well defined nucleus .The genetic material of the cell is basically naked and not enveloped by the Nuclear membrane .
  2. Eukaryotic cells don't have a cell wall surrounding their cell membrane. The Eukaryotic cells have a well organised nucleus .The genetic material of the cell is surrounded by nuclear membrane or nuclear envelope.
  3. Both Eukaryotic and prokaryotic cells have DNA.Both have a plasma membrane or cell membrane.
7 0
3 years ago
What is the best source of vitamin C?<br> - Cheddar Cheese<br> -strawberries<br> -lentils
seraphim [82]
<span>-strawberries i hope dis helps you</span>
3 0
3 years ago
Read 2 more answers
The assembly of transcription factors begins
Llana [10]

Answer:

it begins when it begins

Explanation:

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3 years ago
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