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dsp73
3 years ago
8

Two of the six Kingdoms are Prokaryotic, which means that their cells have no nucleus. These two kingdoms are Eubacteria and Arc

haea. Unicellular organisms reproduce by replicating their cells, as shown in the diagram below.
> Daughter cell

Parent cell > Cell division

> Daughter cell

What form of reproduction is this?

a.) Sexual Reproduction

b.) Asexual Reproduction

c.) Budding

d.) Fragmentation
Biology
2 answers:
Diano4ka-milaya [45]3 years ago
7 0

Answer:

B. This is asexual reproduction

Explanation; When a cell divides to make two cells, a 'mother' and 'daughter' cell it is asexual reproduction, it only takes one cell to make more. Sexual reproduction needs two organisms to make another, whereas asexual reproduction  only needs one.

Budding and Fragmentation are not forms of reproduction so they are not the answers.

Luba_88 [7]3 years ago
6 0
Asexual Reproduction , is the correct answer
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Analyze and evaluate how natural selection produces change in populations as opposed to individuals.​
RSB [31]

Answer:

Natural selection can be described as a phenomenon in which individuals of a population which are better adapted to survive in an environment are favored by nature as compared to the individuals of the population which lack better characteristics to survive in the environment.

Through natural selection, evolution occurs and the allelic frequency changes over a period of time. The process of evolution as well as change in the allelic frequencies does not occur just by a single individual, rather it is a collective effort which takes a lot of time. Hence, we say that natural selection changes the population and not a single individual.

4 0
2 years ago
If 1/8 remains after 21 years, what is the half-life?
vagabundo [1.1K]

Half life formula

The number of unstable nuclei remaining after time t can be determined according to this equation:

N(t) = N(0) * 0.5^(t/T)

where:

N(t) is the remaining quantity of a substance after time t has elapsed.

N(0) is the initial quantity of this substance.

T is the half-life.

It is also possible to determine the remaining quantity of a substance using a few other parameters:

N(t) = N(0) * e^(-t/τ)

N(t) = N(0) * e^(-λt)

τ is the mean lifetime - the average amount of time a nucleus remains intact.

λ is the decay constant (rate of decay).

All three of the parameters characterizing a substance's radioactivity are related in the following way:

T = ln(2)/λ = ln(2)*τ

How to calculate the half life

Determine the initial amount of a substance. For example, N(0) = 2.5 kg.

Determine the final amount of a substance - for instance, N(t) = 2.1 kg.

Measure how long it took for that amount of material to decay. In our experiment, we observed that it took 5 minutes.

Input these values into our half life calculator. It will compute a result for you instantaneously - in this case, the half life is equal to 19.88 minutes.

If you are not certain that our calculator returned the correct result, you can always check it using the half life formula.

8 0
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Answer:

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Explanation:

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