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Y_Kistochka [10]
2 years ago
14

2. How are fossils formed? Click to add title

Biology
1 answer:
Vaselesa [24]2 years ago
6 0

Answer:

Fossils are formed through preservation: Freezing.

Explanation:

Ice and low temperatures keep organisms from decaying. Large mammals have been found buried in ice, probably caused by earthquakes and avalanches, in Siberia and Alaska.

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Sarah and her friend see a sign for gas at exit 5. The next exit is 70 mi away. If they have one fifth of a tank of gas, should
tiny-mole [99]

Answer:

They can probably wait to get gas until the next exit.

Explanation:

Easy peasy

8 0
3 years ago
The initial size of a culture of bacteria is 2000. after 1 hour the bacteria count is 16000. find a function n(t) = n0ert that m
fgiga [73]

The initial size of the cultured bacteria was around 2000 after an hour the bacteria count turned to 16000 with the value of n = 8000.

Given:

n = 1000 e^ (kt)

note when t = 0,

e^kt = e^0 = 1

1000*1 ar t = 0

Stepwise solution,

4000/1000 = 4 = e^(k*1)

or

e^k = 4

k = In 4 = 1.386

when n = 1000,

n = 1000 e^(!.386 t)

t = 1.5

n = 1000 e^(2.079)

n = 8000

Hence, the correct answer is (n=4000)

Learn more about bacterial culture,

brainly.com/question/15605943

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8 0
1 year ago
Please explain the difference between a frameshift mutation and a base substitution mutation.
harina [27]

Answer:

A frameshift changes every codon past it. A base substitution only changes one codon.

Explanation:

DNA is comprised of nucleotides (A, C, T, G) that make up amino acids. Every three bases is called a codon and represents an amino acid.

In a frameshift mutation, a nucleotide is either added or deleted from the sequence. This offsets the entire sequence after it because the reading frame shifts. Here's an example:

ACTGCTATCGTCATC

If another T is added in between the first and second codons, then every codon after will be changed.

ACT>T<GCTATCGTCATC

A substitution mutation is usually less severe, as it only alters one codon in the sequence. These occur when one nucleotide is replaced by another one. Here's an example:

ACTGCTATCGTCATC

Let's say the first G is replaced by a T.

ACT>T<CTATCGTCATC

As you can see, none of the other codons changed.

Typically, a frameshift mutation is considered worse than a substitution mutation.

7 0
3 years ago
Read 2 more answers
What causes the “heat island” effect?
aleksandrvk [35]
Here's a basic answer,
<span>Normal temperatures of Tokyo go up more than those of the surrounding area. An urban heat island (UHI) is a city or metropolitan area that is significantly warmer than its surrounding rural areas due to human activities. ... The main cause of the urban heat island effect is from the modification of land surfaces.
I didn't answer this, but Google did.
</span>
3 0
3 years ago
Read 2 more answers
What combines to form rocks<br><br>minerals <br>Crystal's<br>other rocks​
vampirchik [111]

Answer:

A rock is a collection of minerals. In a cooling lava, mineral crystals do not have time to form and are very small. The chemical composition will be the same as if the magma cooled slowly. Existing rocks may be heated enough so that the molecules are released from their structure and can move around.

Explanation:

6 0
2 years ago
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