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Kamila [148]
2 years ago
10

Which of these is a pure substance . dimond . salt . ocean water a. a and b. b and c

Biology
2 answers:
ikadub [295]2 years ago
8 0
I think a and b...........................                              
Mazyrski [523]2 years ago
7 0
I think salt is it                                            
........................
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PLEASE HELP!!! (Picture attached)
katrin2010 [14]
The answer is A: Polyploidy is a condition in which an organism acquired more than the normal amount of chromosomes.

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5 0
3 years ago
In the study of earth and space, we use the idea of uniformitarianism to conclude many things about objects beyond earth. This i
romanna [79]

Answer:

D)

Explanation:

The idea of uniformitarianism is important to understand the changes or history of earth and it states that earth undergoes uniform changes in the past and present.

The idea of uniformitarianism also concludes many things about objects beyond earth which states that the laws and processes remain the same everywhere in the universe and have in the past. Uniformitarianism says that rate of the process remains uniform through time.

Hence, the correct option is "D)"

8 0
2 years ago
When you breathe, the pressure inside the lungs is different than the pressure outside the lungs. This is an example of a(n) ___
ICE Princess25 [194]

Answer:

pressure gradient

Explanation:

The correct answer would be pressure gradient.

<em>A pressure gradient is created when there is a difference in the amount of pressure between two points or locations that are adjacent to one another.</em>

In this case, the two locations that are adjacent to one another are the inside and outside of the lung. When one breathes in, the pressure inside the lung is more than that of the outside and the lung expands as a result. When we breathe out, the pressure outside is more than that of the inside and the lung collapses.  

7 0
3 years ago
When does facilitated diffusion occur?
Trava [24]

Answer:

When certain large molecules are unable to move through the membrane without the help of channel proteins

Explanation:

Facilitated diffusion occurs when large molecules that are unable to pass through a membrane on their own make use of channel proteins to move from one side of the membrane to the other. Facilitated diffusion can occur when a liquid on one side of a membrane has a higher osmotic pressure than a liquid on the other side of the membrane, but it isn’t a required feature of facilitated diffusion. Similarly, facilitated diffusion can occur when there’s a large membrane potential present, but it isn’t a required feature of facilitated diffusion. Facilitated diffusion doesn’t require the use of energy, so the presence of ATP is irrelevant to facilitated diffusion occurring.

5 0
2 years ago
How does biodiversity affect an ecosystem's ability to stabilize when its climate changes?
konstantin123 [22]

Answer:

Biologically diverse communities are also more likely to contain species that confer resilience to that ecosystem because as a community accumulates species, there is a higher chance of any one of them having traits that enable them to adapt to a changing environment.

Explanation:

Hope it helpsssss!!1

Marke mr brainlist plzzzzzzzzzzzzzzz

3 0
3 years ago
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