6. Fossils are remains of organisms found in sedimentary rock. These remains are found in thousands of rock layers around the wo
rld and provide evidence for Earth's long history of changing lifeforms.
Rock layers that formed more recently
contain fossils of animals only.
contain fossils of plants only.
contain fossils that resemble existing species less closely than do fossils found in older rock layers.
contain fossils that resemble existing species more closely than do fossils found in older rock layers.
2 answers:
I believe the answer is contain fossils that resemble existing species more closely than do fossils found in older rock layers
Its your 3'd answer><span>contain fossils that resemble existing species more closely than do fossils found in older rock layers.</span>
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Answer:
Phosphorus trioxide
Explanation:
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2. Hypothesis
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Answer:
78.14 % B; 21.86 % H
Step-by-step explanation:
The formula of diborane is B₂H₆.
The masses of each element are:
2B = 2 × 10.81 = 21.62 u
6H = 6 × 1.008 = <u> 6.048 u
</u>
TOTAL = 27.67 u
% B = 21.62/27.67 × 100
= 78.14 %
% H = 6.048/ 27.67
= 21.86 %
Chemical bonds have been broken down and new substances have been formed. Hope this helps.