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Ne4ueva [31]
2 years ago
10

In the 1990s, many scientists agreed that the five-kingdom classification scheme should be expanded to six kingdoms. Which disco

very supported this decision?
Biology
1 answer:
Leto [7]2 years ago
7 0

the use of microscope because it led to the discovery of new organism and identification differences in cells

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Questions
Marat540 [252]

The decay of uranium isotopes is used to provide information about the age of Earth.

<h3>Explanation:</h3>

Isotopes of Uranium U-232, U-233 , U-234 , U-235 , U-236 , U-238 are used as fuel in nuclear reactors or as explosives for nuclear weapons. Uranium 238 is not very radioactive and it constitutes for nearly 99.3% of natural uranium on Earth and has the longest lifetime: its period is 4.5 billion years, about the age of Earth.

Use of radiometric dating techniques help in defining the age of substances (natural or man-made) using the known decay rates of radioactive elements. Each element has an  individual decay rate and half life time.

Two Uranium isotopes (U-238 and U-235) are used for radiometric dating. Both the isotopes have different decay rates and half life period. Both are unstable and radioactive. Since two different isotopes produce two different decay clocks (one as a reference to other), it is beneficial in accurately determining the age of samples. The age of earth (rocks or other natural elements) can be easily determined using Uranium isotopes.

4 0
3 years ago
An organism that contains chloroplasts is able to produce food by the process of
Nadya [2.5K]
The process of photosynthesis.
6 0
3 years ago
List the signs of sugar addiction
Nezavi [6.7K]

Answer:

headaches, lethargy or feeling tired, cravings, muscle pain, nausea, bloating and even insomnia.

Explanation:

3 0
3 years ago
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cross a pea plant that is hetero zygous for smooth pods with a pea plant with constricted pods what are the phenotypic and genot
Nikitich [7]

Answer:

genotypic

Explanation:

Sorry if its wrong.

4 0
2 years ago
What is rarefaction and how does this relate to density?
kumpel [21]

Answer:

rarwfaction is when a rare fragment off something is discovered

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3 years ago
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