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geniusboy [140]
3 years ago
7

Which piece of evidence supporting the theory of plate tectonics was discovered most recently?

Chemistry
1 answer:
goldenfox [79]3 years ago
7 0
 The occurrence of volcanic and earthquake activity near continental boundaries
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Which statement best describes the kinds of questions we can use science to answer?
qwelly [4]
Almost any and all so i say B. because A. C. and D. can all be used.
4 0
3 years ago
There are two types of physical changes and chemical reactions- endothermic and exothermic. On the diagram below, which picture
Agata [3.3K]

Answer:

it is b because its releases heat in to all directions and not b because it staying inside and not releasing anything :)

Explanation:

6 0
4 years ago
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a muscle fiber contracts when myosin filaments pull actin filaments closer together and thus shorten sarcomeres within a fiber.
kakasveta [241]

Answer:According to the sliding filament theory, a muscle fiber contracts when myosin filaments pull actin filaments closer together and thus shorten sarcomeres within a fiber.

Explanation:

No need for an explanation if i just answered it

7 0
3 years ago
Study the reaction. NO(g) ⇌ 12N2(g) + 12O2(g) ΔH = −90.3 kJ Which statement about the reaction is correct? A) The reverse reacti
lozanna [386]

Answer:

The forward reaction is an exothermic reaction.

Explanation:

An exothermic reaction is one in which energy is released, usually in the form of heat hence the enthalpy of the reaction is negative. When a reaction exothermic, the energy of the reactants is greater than the energy of the products hence the excess energy is given out as heat. The reactants lie at a higher energy level in the reaction profile compared to the products.

When we look at the reaction given in the question, NO(g) ⇌ 12N2(g) + 12O2(g) ΔH = −90.3 kJ , we can easily see from the thermochemical reaction that the forward reaction is exothermic, energy is released by the reaction system as evidenced by the negative enthalpy of reaction.

4 0
3 years ago
Which of the three minerals contain calcium carbonate?<br> A. salt<br> B. chalk<br> C. talcum
never [62]

Answer:

Answer choices A, B, and C all contain a certain level <em>(or amount, if you will)</em> of <u>Calcium Carbonate</u>, but <u><em>B. chalk</em></u> contains the most amount out of all three.

Explanation:

I hope that this was helpful! (✿◠‿◠)

Thank you!

4 0
2 years ago
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