Answer:
D
Explanation:
Amphibians have eggs that need to be constantly submerged in water. The amniotic egg is like a chicken egg. It doesn't need to be submerged in water, but it does need to be kept warm.
Answer:
A = water is an excellent solvent.
Explanation:
What is solvent:
Solvent is the that part of solution which is present in large proportion and have ability to dissolve the solute.
Explanation:
In simplest form solvent is something in which other substance get dissolve. The most widely used solvent is water, other examples are toluene, acetone, ethanol, chloroform etc.
Water is called universal solvent because of high polarity all polar substance are dissolve in it. Hydrogen is less electronegative while oxygen is more electronegative and because of difference in electronegativity hydrogen carry the partial positive charge while oxygen carry partial negative charge.
Water create electrostatic interaction with other polar molecules. The negative end of water attract the positive end of polar molecules and positive end of water attract negative end of polar substance and in this way polar substance get dissolve in it.
Example:
The minerals and nutrients in our body dissolved in water and transported through out the body.
Answer: someone will help :)
Explanation:
<u>Answer:</u>
<em>Under constant volume in a closed system the relationship between temperature and pressure is directly proportional. </em>
<u>Explanation:</u>
As the pressure increases in the system the temperature also increases in the same order. It is explained in the <em>Gay-Lussac's Law</em>, also known as pressure-temperature law. If a gas is compressed i.e.
The pressure is reduced inside a container (constant volume) then the temperature inside the container is increased, it is practical demonstration of the<em> pressure-temperature law</em>. This mechanism is also used in refrigerators.
