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STALIN [3.7K]
3 years ago
15

Sophie says dolphins and sharks look very similar, so they must be related. Jake disagrees, saying DNA evidence has shown that d

olphins and other aquatic mammals are actually more closely related to the ancestors of modern hippos. Who is correct using the modern system of classification?
Biology
2 answers:
Dima020 [189]3 years ago
7 0

According to modern classification I will say that Jake is correct. With the use of tracing back and DNA technology then we can say that this is the digital way which is used nowadays to classify animals.

Sophie says through her observation that the characteristics of the animal classification used.

sweet-ann [11.9K]3 years ago
4 0
Sophie uses her observation and judgement in terms of characteristics in terms of classifying animals. She uses the old system of classification. Now with the presence of DNA technology and tracing back the origins of the genes of animals, we can say that Jake is correct. 
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Lesson 01.04 Properties of Water
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Answer:

1= In living organisms cells are composed of water or we can say that water is one of the important constituent of cells.

2= Hydrogen bonding import man properties to the water such as cohesion, high heat of vaporization, high heat capacity etc.

3= Because of high polarity, all polar substance get dissolve and make it universal solvent.

Explanation:

Solvent is the that part of solution which is present in large proportion and have ability to dissolve the solute. In simplest form it 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.

Hydrogen bond:

The hydrogen bond is the attraction between the toms which already take part in the other chemical bons. The one atom is hydrogen while other may be oxygen, nitrogen or fluorine.

The hydrogen bonding in water import man y properties in it such cohesion, high heat of vaporization, high heat capacity etc. The hydrogen bond hold the water molecules together.

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:

when we stir the sodium chloride into water the cation Na⁺ ions are surrounded by the negative end of water i.e oxygen and anion Cl⁻ is surrounded by the positive end of water i.e hydrogen and in this way all salt is get dissolved.

7 0
3 years ago
A family that has no elements found in the earths crust
gayaneshka [121]
<h2>Answer:</h2>

Family of Synthetic Elements

<h2>Explanation:</h2>

In chemical Sciences a synthetic element is a chemical element that does not occur naturally on Earth, and it can only be created artificially in the laboratory. So far, 24 synthetic elements have been created in the laboratory and their atomic numbers lie from 95–118.

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3 years ago
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WARRIOR [948]

Answer:

The Fibonacci succession is the next infinite succession of natural numbers, each Fibonacci number is the sum of the two previous to it: a hurricane, the galaxies or the roses have this pattern in nature.

Explanation:

The Fibonacci spiral: an approximation of the golden spiral generated by drawing circular arcs connecting the opposite corners of the squares adjusted to the values of the succession; successively attaching squares of side 0, 1, 1, 2, 3, 5, 8, 13, 21 and 34.

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3 years ago
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Oxygen has a partial negative charge, whereas hydrogen had a partial positive charge.

This means that water molecules are polar and can be used to dissolve a lot of chemicals, that's why water is such a popular solvent.
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