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horsena [70]
3 years ago
14

X-rays _____.

Biology
1 answer:
shepuryov [24]3 years ago
4 0
X-rays were discovered by accident (by Wilhelm Rontgen).
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Which of the following examples best illustrates the process of evolution by natural selection?
Veseljchak [2.6K]
The answer is B. The reason why is because natural selection causes changes in a populations over many generations, and in this case the change that is being made is the that the population is becoming immune to a disease.
3 0
2 years ago
In a population with 2 alleles for a particular locus (D and d), the frequency of the D allele is 0.75.
kipiarov [429]
A is the answer. This answer is also a question, and the answer to that question is 0.25
3 0
2 years ago
The distance versus time graph for Object A and Object B are shown.
Ksivusya [100]

Answer:

The correct answer is - Both move with constant speed.

Explanation:

If an object moves in a particular way that it covers the same distance at the same times the speed considered as constant suppose if two objects a and b both travel 10 m and 20 m respectively and the time they take in travel are 2 and 4 seconds respectively than we can say they both have a constant speed.

The relation between the variables x,t, and v is

x=v.t

If V is constant which is the speed we get a straight line x-t in the graph.

By the given information we can say that both objects A and B are traveling at a constant speed.

4 0
2 years ago
A Venn diagram can be used to compare and contrast nucleic acids. Which characteristic would be correctly found in B?
soldier1979 [14.2K]

Out of the following given choices;

contain ribose

consist of two strands

made of nucleotides

have an R group

The answer is 'made of nucleotides'. This is because out of the choices, DNA and RNA share the similarity of being made of nucleotides. However, while DNA is made of deoxyribose nucleotides, RNA is composed of ribose nucleotides. This difference is that in deoxyribose nucleotide, the 2nd carbon has a hydroxyl group while ribose nucleotide has hydrogen.

6 0
3 years ago
What is pyrenoid?<br><br>good morning ​
Mariana [72]

Answer:

The pyrenoid, a dense structure inside or beside chloroplasts of certain algae, consists largely of ribulose biphosphate carboxylase, one of the enzymes necessary in photosynthesis for carbon fixation and thus sugar formation. Starch, a storage form of glucose, is often found around pyrenoids.

4 0
3 years ago
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