Well I don't know for sure but it can be sound waves.
Answer:
The answer is neither
Explanation:
All of the following things all have atoms in them therefor,its neither.
The hotter water is less dense and rises. The cooler water then sinks because it is more dense.
Answer:
Its pressure will be 0.54 atm at 100 K.
Explanation:
Gay-Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions with the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.
Gay-Lussac's law can be expressed mathematically as the quotient between pressure and temperature equal to a constant:

Studying two different states, an initial state 1 and a final state 2, it is satisfied:

In this case:
- P1= 1.75 atm
- T1= 50 °C= 323 K (being 0 C=273 K)
- P2= ?
- T2= 100 K
Replacing:

Solving:

P2= 0.54 atm
<u><em>Its pressure will be 0.54 atm at 100 K.</em></u>
<span>Many life forms consist of a single cell. As well as simple bacteria, there are more complex organisms, known as protoctists. Unlike bacteria, they have complex internal structures, such as nuclei containing organized strands of genetic material called chromosomes. Most are single-celled, but some form colonies, with each cell, usually remaining self-sufficient.
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Prokaryotes are unicellular organisms whose cells lack a nucleus. A nucleus is a dense are in a cell that contains nucleic acids the chemical instructions that direct the cell's activities.
Not sure if this really helps but...here you go!