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Katarina [22]
3 years ago
7

The lower rocks in the Muav limestone are 505 million years old. The upper rocks in the Redwall limestone are 340 million years

old. What could explain the gap?
Biology
1 answer:
Alex777 [14]3 years ago
6 0

Unconformity

Explanation:

The gap between the lower and upper limestone layer can be explained by the occurrence of an unconformity.

An unconformity is a break in stratigraphic record usually marked a prolong period of non-deposition or erosion.

A major break of several millions of years is called a hiatus. A minor break is a diastem.

  • During a period of non-deposition, no materials are brought into the basin.
  • This can last for several years until deposition resumes again.
  • Such a prolonged period of non-deposition causes a break in stratigraphic record.
  • At other times, stratigraphic records can be lost to erosion.
  • Erosion entails the washing away of the earth.
  • This will ultimately cause the loss of records between two strata till deposition resumes.
  • In most strata, periods of non-deposition and erosion usually takes place hand in hand.

learn more:

Wind erosion brainly.com/question/2115729

#learnwithBrainly

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365 days

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In horses, a black coat is dominant to a brown coat (B = black, b = brown). Long legs are dominant to short legs (L = long, l =
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Answer:

Bb ll for the black short-legged horse

bb Ll for the brown long-legged horse

bb ll for the offspring

Explanation:

In order for the offspring to have the two recessive traits, the parents must have been carrying the recessive genes on at least 1 allele. The first horse is black, but it must have a little b for the offspring to gain a little b from it. The second horse and the offspring are brown, so they must both have two little b's. The same goes for the length of the legs. The first horse and offspring must have two little l's because they have short legs and the second horse must have 1 little l in order for the offspring to inherit 1.

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Kobotan [32]

Answer:

C. rr

Explanation:

The dominant genotype will always be denoted by the capital version, or in this case R.

The round pea shape is dominant to the wrinkled pea shape, which means that, in the Punnett Square, the combinations of RR, Rr, rR, will all come out to be round pea shape.

The last box, rr, would be the one that gives the wrinkled phenotype.

In this case, by ratio, wrinkled phenotype show up 25%

                    by ratio, round phenotype show up 75%.

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