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tresset_1 [31]
3 years ago
11

Which evidence suggests that several mass extinctions have occurred during Earth's history?

Biology
2 answers:
Tom [10]3 years ago
8 0

Answer:

OPTION (D)

Explanation:

jus took the unit test

Hitman42 [59]3 years ago
6 0

Answer:

Many fossils of organisms that are no longer living have been discovered.

Explanation:

Mass extinctions could be first identified because of the traces they left in the fossil record. In the strata, the lower, older rock layer shows a diversity of fossil life forms, and the younger lawyer above is depauperate if we compare.  

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g If a colony of bacteria starts with 1 bacterium and doubles in number every 20 ​minutes, how many bacteria will the colony con
Lynna [10]

Answer: 2.81 x 10∧14 baterias after 16 hours.

Explanation:

Hi, first we have to find how many 20 minute intervals are in 16 hours.

If 1 hour = 60 min, 16hours = 960 minutes (16 h x 60 min / 1 h)

If we divide the 960 minutes (16 hours) by 20 minutes we obtain 48. (960/48)

There are 48 twenty minutes intervals in 16 hours.

Now we have to apply the exponential growth formula:

P (t) = Po (1 +r) ∧t

Where:  

P (t) = population at time t  

P (0) = initial population (1)

r = growth rate (1)

t = time (48)

Replacing with the values given:

P (t) = 1 (1 + 1) ∧48= 2.81 x 10∧14

2.81 x 10∧14 baterias after 16 hours.

7 0
2 years ago
Why is DNA replication such an important process?
azamat
It is important because it creates a second copy of DNA that must go into one of the two daughter's cells when a cell divides
8 0
3 years ago
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Help<br> this is expected by 8:30
NNADVOKAT [17]

DNA is a nucleic acid molecule that undergoes a replication process to form a new daughter strand. The blue segment is the parental strand, and the yellow is the daughter strand.

<h3>What is replication?</h3>

Replication is the process of the central dogma that duplicates the copy of the parent strand into new daughter strands. The two helixes of the parent strand get separated to make the complimentary copy of the new strand.

The daughter DNA is semi-conservative and are complementary structure made from the duplication of the parent strand with the help of the replication enzymes.

Therefore, the daughter strands are the semi-conservative copies of the parental strand.

Learn more about replication here:

brainly.com/question/16464230

#SPJ1

7 0
2 years ago
"an older client asks why so many older people are diagnosed with cancer. what should the nurse respond to the client
asambeis [7]
“Cells grow weaker in time, and get more prone to the mutation.”
4 0
3 years ago
Which is the site of the most ATP production during cellular respiration?
MAXImum [283]

Answer:

mitochondrion

Explanation:

the mitochondrion

6 0
3 years ago
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