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ivann1987 [24]
3 years ago
7

Scientists observed a rock stratum and discovered some fossils. The image shows the fossils they discovered. What can you interp

ret from the image?
an illustration showing layers rock with fossils embedded in some rock layers


1. The dinosaur and the mammoth existed after the trilobites.

2. The dinosaur and the armored fish existed before the trilobites.

3. The trilobites and the armored fish died before the dinosaur.

4. The trilobites and the armored fish were born after the dinosaur.

5. The early mammoth is older than the trilobites.

SAT
2 answers:
IRINA_888 [86]3 years ago
6 0

The correct statements are:

1. The dinosaur and the mammoth existed after the trilobites.

The trilobites are a species that appeared and existed much earlier than any dinosaur or later mammals like the mammoth. The difference in their existence is few hundred million years, and while the trilobites are primitive life form, the dinosaurs and mammoths are much newer, better evolved species.

3. The trilobites and the armored fish died before the dinosaur.

Before the dinosaurs appeared, there were many other species that lived before them, some of which are the trilobites and the armored fish. The trilobites being one of the oldest species, and the armored fish being a more evolved but still primitive fish with exoskeleton. Both of them existed in periods prior to the dinosaur domination.


DedPeter [7]3 years ago
3 0

Answer:

Option (1) and (3)

Explanation:

In the given image, it shows a rock stratum, which is comprised of different fossils that were deposited at different times in different sedimentary rocks.

The oldest fossils recorded in the strata are the trilobites. After this, the next fossil found is a gastropod which is younger than the trilobites.

Above, this layer, there layers another igneous rock layer which is followed by the sedimentary rocks comprising a fossil of Devonian armored fish.

Next to this, there occurs a dinosaur fossil and lastly, above this layer, there occurs a mammoth fossil.

So, from the image, a geologist can easily determine which fossils have deposited first (oldest) and which have deposited in the recent (youngest).

Thus, the two options (1) and (3) are correct which says that-

Both the dinosaur and mammoth lived after the death of trilobites.

Both the trilobites and the armored fish died before the existence of the dinosaur.

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Considering the given discrete probability distribution, it is found that there is a 0.36 = 36% probability that Hugo buys fewer than 3 packs.

<h3>What is the discrete probability distribution?</h3>

Researching on the internet, it is found that the discrete probability distribution for the number of packs that Hugo buys is given by:

  • P(X = 1) = 0.2.
  • P(X = 2) = 0.16.
  • P(X = 3) = 0.128.
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The probability that he buys fewer than 3 packs is given by:

P(X < 3) = P(X = 1) + P(X = 2).

Hence:

P(X < 3) = P(X = 1) + P(X = 2) = 0.2 + 0.16 = 0.36.

There is a 0.36 = 36% probability that Hugo buys fewer than 3 packs.

More can be learned about discrete probability distributions at brainly.com/question/24855677

7 0
2 years ago
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NO ONE CAN SOLVE THIS, NEITHER CAN YOU :::By what percent will a fraction change if its numerator is decreased by 10% and its de
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Answer:

9/5

Explanation:

original fraction : x/y

new fraction = .9x/(.5y)

= 9x/5y

(9x/5y) / (x/y)

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= 9/5

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so it increased by 80%

e.g suppose we had 100/200 or 1/2

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new ratio = (9/10) / (1/2)

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8 0
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The only reaction that will most likely take place based on the activity series is; C: Ba + Na₂CO₃

<h3>Activity Series</h3>

From the activity series given, we can say that during a displacement reaction, the more reactive metal will always displace the lesser reactive metal from a compound.

Let us look at each of the given options;

A) Ag + FeCl₃

From the activity series, Silver(Ag) is less reactive than Iron(Fe) and as such Silver cannot displace iron from its' compound.

B) Zn + CaO

Zinc (Zn) is a less reactive metal than Calcium (Ca), so it cannot cannot displace Calcium from its' compound.

C) Ba + Na₂CO₃

Barium (Ba) is a more reactive metal than Sodium (Na), and therefore Barium will displace sodium from its compound in a displacement reaction.

D) Cr + KNO₃

Chromium (Cr) is a lesser reactive metal than Potassium (K), and it therefore cannot displace Potassium from its compound.

Complete question is;

Which reaction will most likely take place based on the activity series? Li > K Ba > CaNa > Mn > Zn > Cr> Fe> Cd Ni > H > Sb > Cu > Ag > Pd > Hg > Pt

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An oscillation is known to be that which need to be forced of it is in line or in response to an kind of excitation or free vibration.

Hence in the case above, Since the synthesizer is an electronic instrument, oscillation is not a factor in sound generation is a false statement.

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