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GarryVolchara [31]
3 years ago
13

How long did it take for the third of population to double?How long did it take for the population to double a third time?

Biology
1 answer:
Flura [38]3 years ago
8 0
1)How long did it take for the third of population to double?How long did it take for the population to double a third time? 2) 51 years
___________ A third time? It took 75 years for the population to double a second time and it took 51 years to double a third time. It will reach 8 billion at about 2024. 4.
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The city has just installed three new traffic signals along the route you travel each day from home to College, which adds ten m
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hassles

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Example
chubhunter [2.5K]

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71

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You have a 15kb plasmid. EcoRI cuts the plasmid into 7kb and 8kb pieces, and BamHI cuts the plasmid into 1kb and 14kb pieces. If
Harman [31]

Answer:

a. Bands at 1kb, 6kb and 8kb

Explanation:

The EcoRI and BamHI are the restriction enzymes which cut the DNA sequence especially a plasmid at specific sites called the restriction sites.

The restriction enzymes produces bands of specific length therefore these restriction enzymes are used to estimate the approximate length of the DNA.

In the given question, the

1. EcoRI- produces two strands of 7 kb and 8 kb

2. BamHI- produces two strands of 1kb and 14kb

This shows that the length of DNA sequence is 15kb

But when the DNA strand are digested with both the enzymes simultaneously then it will produce three bands as:

i) 14 kb can be broken down in 2 bands of 6 kb and 8 kb

ii) 1 kb band is already produced by the Bam HI.

This shows that 1+6+8= 15 kb

Thus, Option-A is correct.

5 0
3 years ago
Competitive exclution occurs when ______
denpristay [2]

Answer:

Competitive exclusion occurs when " organisms attempt to fill the same niche"

Explanation:

mostly due to the fact that they are competing over the same food source, which is always limited in some way.

7 0
3 years ago
Pillbugs are placed in a container where they have a choice of a wet or a dry environment. Researchers record how much time was
alexdok [17]

Answer: Wet or dry environment.

Explanation:

<u>The independent variable is the variable that a researcher manipulates in an experiment in order to carry out a study on the incidence of the expression of the dependent variable.</u> Therefore, the independent variable is the one that changes or is controlled to see its effects on the dependent variable.

Researchers can then design a container with a wet or dry environment. But it's the pillbugs that are going to choose where to go and how long to spend in each part. So the time they spend in each part is a dependent variable since that cannot be controlled by the scientists conducting the experiment. Henceforth, the researches will just record this dependent variable without controlling it. But they can decide what to put in the container to make it wet or dry environment, or whatever they want to design. So wet or dry environment is the independent variable.

7 0
3 years ago
Read 3 more answers
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