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Arturiano [62]
3 years ago
7

Which isotope has a relatively short half-life?

Biology
1 answer:
beks73 [17]3 years ago
3 0
Oxygen-16 and Carbon-12 are stableisotopes of elements O and C respectively. Hence, they do not have half-lives. But Carbon-14 andUranium-238 are radioactive isotopes. Among them Carbon-14 has relatively short half-life as about 5730 years while Uranium-238 has a long half-life as about 4.5 billion years.

Answer is. uranium-238
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They use them so that they can see what type of organisms live there.

Explanation:

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What does it mean to "induce" your cells?​
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Induction, in embryology, process by which the presence of one tissue influences the development of others.

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In the rain forest, why do the plants often have long, pointy leaves?
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3 years ago
Based on biology and neo-Darwinism, _____ explains how environment selects organizations for survival or extinction.
lutik1710 [3]

Given what we know, we can say that biology and neo-Darwinism both support the idea that natural selection explains how the environment selects organizations for survival or extinction.

<h3>Natural Selection. </h3>
  • This concept is often summarized by the phrase "survival of the fittest".
  • This refers to the ability of an organism to adapt to its environment.
  • The better-adapted organisms will live to pass on their genetic information, thus changing the organization of the species.
  • Those not able to do so will face extinction.

Therefore, since natural selection involves the survival or extinction of a species based solely upon their ability to adapt and change their genetic organization in response to their environment, we can say that this concept helps to explain how the environment selects organizations for survival or extinction.

To learn more about natural selection visit:

brainly.com/question/2725702?referrer=searchResults

3 0
2 years ago
As DNA replication continues and the replication bubble expands, the parental double helix is unwound and separated into its two
liberstina [14]

Answer:

A. Helicases

B. Single strand binding proteins

C. Single strand binding protein

D. Topoisomerases

Explanation:

The helicases bind on the replication fork aiding in the unwounding of the DNA helix to allow for replication. The single strange binding proteins attach/bind to the separated single stranded DNA after the replication fork to prevent re-annealing of the single stranded DNA preventing Hydrogen bond formation that reanneals these two strands together. The topoisomerases are found just ahead of the replication fork preventing overwounding/ positive supercoils of the DNA. They do this by introducing breaks into the phosphate backbone of the DNA allowing them rotate forming negative supercoils and attaching the breaks once the DNA strand is relaxed.

4 0
3 years ago
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