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lukranit [14]
3 years ago
12

What are sedimentary rocks that form from evaporating sea water called?

Biology
1 answer:
Leona [35]3 years ago
3 0

A. chemical is your answer

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What are the precautions that should be token when using a photometer? please help me​
Maksim231197 [3]

Answer:

PRECAUTIONS FOR USING A SPECTROPHOTOMETER :

1 . By allowing the lamps and electronics to warm up

2.By cleaning up any spills inside the cuvette compartment

3.By carrying out the set-up procedure in the correct order

4.By ensuring that %T or transmission is used as appropriate

5.By closing the door to the cuvette compartment before reading the result

6.By performing calibration checks after set up

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8.By using the correct wavelength

PRECAUTIONS FOR USING A FRAME PHOTOMETER:

1. Do not move or Carry the unit when in use or connected to the mains electricity supply

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4. Over adjustment of the fuel valve will cause excess flame

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5. Do not cover the chimney whilst in use.

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I HOPE THIS WILL HELP AND IF NOT LET ME KNOW

8 0
2 years ago
Justify the statement “Structure of a cell is adapted to its function”, by giving examples of 2 plant and 2 animal cells that ar
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Answer:

plant cells, palisade mesophyll cell, spongy mesophyll cell

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4 0
2 years ago
What does the author explain in the passage?
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Answer:

What passage

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please provide an example

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3 years ago
Which molecule is a first messenger but not a second messenger
k0ka [10]

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Hormones act as first messenger but not as second messengers.

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Second messenger act as signaling molecule which are secreted in response to various biological signals generated by first messenger such as hormones,neurotransmitters etc.Second messengers include various bioactive molecules such as cyclic AMP(cAMP),cyclic GMP(cGMP),inositol triphosphate(IP3),diacylglycerol(DAG),calcium ions(Ca2+) etc.

         Hormones are extracellular signaling molecules whereas second messengers are intracellular signaling molecules.

5 0
3 years ago
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