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Karolina [17]
3 years ago
10

PLSSS HELP! Geologists use rock samples and_________evidence to prove what Earth's ______

Biology
1 answer:
Rus_ich [418]3 years ago
4 0

Answer:

geologists use rock samples and direct evidence to prove what earth's structure is like.

Explanation:

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Rob measures the solubility of three different salts in water at 22°C.
Montano1993 [528]
<span>The correct answer to this question is a line graph. If Rob needs to create a graph that is able to display the combination of two different values - in this case, level to which the salt has dissolved and time taken - and he needs to have more than one result included, then a line graph is the way to present this.</span>
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3 years ago
Describe the specific DNA changes that produce the abnormal cystic fibrosis protein
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F508

it changes the composition of the DNA

DNA is chiefly responsible for storing and transferring genetic information whereas RNA acts as a messenger between DNA and ribosomes during the process of protein synthesis and directly codes for amino acids.

DNA is double stranded while RNA is single stranded.

DNA has thymine in its structure but RNA does not. Instead in place of thymine it has uracil.

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3 years ago
what will occur when the north pole of one bar magnet is moved near the north pole of another bar magnet?
KATRIN_1 [288]
The ends will repel each other
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3 years ago
Which statement about the balanced equations for nuclear and chemical changes is correct? (1 point) Both are balanced according
grigory [225]

Both nuclear and chemical equations are balanced according to the total mass before and after the change.

In every equation or reaction, the total mass of the reactants must be equal to the total mass of the products. In other words, all reactions - be they chemical or nuclear - must obey the law of conservation of mass.

The law of conservation of mass states that mass can neither be created nor destroyed, but can be converted from one form to another during a reaction.

Thus, in order to balance reactions involving chemical or nuclear reactants, the total mass before the reaction must be equal to the total mass after the reaction.

More on the law of conservation of mass can be found here: brainly.com/question/13383562

7 0
2 years ago
A geologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit
Alja [10]

Answer:

B. Corundum

Explanation:

Using the Mohs scale of hardness, the mineral has a hardness greater than 6.5 (Steel nail) but less than 8.5 (Drill bit). The corundum has a hardness of 9.0, which means it cannot be scratched by a drill bit, but all the other choices have a hardness scale less than 6.5 but the mineral was not scratched by the nail. So the best answer would be B.

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3 years ago
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