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love history [14]
2 years ago
15

Please help its difficult

Chemistry
1 answer:
Likurg_2 [28]2 years ago
8 0

Answer:

pounds

pounds pounds pounds

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A geologist studies layered rock to determine its age. Bacteria fossils from the Precambrian age are found in the rock’s upper l
kondor19780726 [428]
Answer:
The bottom layers of the rock could have formed before life occurred.

Explanation:
The bottom layers of the rock could have formed before life occurred because there is no fossil is present. If there is life at that time so the fossils are present at the bottom layer so the absence indicates that is no life present at that time. The bottom layer is older than the upper layer so that's why fossils of bacteria are found in the upper layer of the rock.

Answer:
C. Because bacterial fossils are found only in the upper layers, scientists can conclude that these bacteria evolved towards the end of Precambrian time.

There’s two different types of answers for this question so I just put both of them. Hope it helps : )

4 0
2 years ago
how long does it take (in minutes) for light to reach Saturn from the sun , a distance of 1.466x10^9 km
vampirchik [111]
The _____ along a gene specifies the type of protein that will be produced.            ^                                                                                                                                         9 k
3 0
2 years ago
A laboratory procedure calls for making 590.0 mL of a 1.1 M KNO3 solution. How much KNO3 in grams is needed?
AveGali [126]
590 mL = 590 cm³= 0,59 dm³

C = n/V
n = 1,1M × 0,59 dm³
n = 0,649 mol
_____________________________

M KNO₃ = 39g+14g+16g×3 = 101 g/mol

1 mole -------- 101g
0,649 --------- X
X = 101×0,649
X = 65,549g KNO₃

:)
8 0
2 years ago
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Monica [59]

Answer:

its very dark and scary

Explanation:

8 0
2 years ago
What compound is always produced when an acid and a base are combined?
denis-greek [22]
Salt and water are formed

H₃PO₄ + 3KOH = K₃PO₄ + 3H₂O
CH₃COOH + NaOH = CH₃COONa + H₂O
5 0
3 years ago
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