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Elden [556K]
3 years ago
11

What is the first step in the creation of a theory?

Biology
2 answers:
alexdok [17]3 years ago
5 0

Your answer would be: A. because scientists use what they have to create a theory, a theory is pretty much an educated guess is what a teacher would say, the theory would need to have evidence in order for it to be an educated guess. The scientist would have to come up with an explanation in order for the theory to work, or be an educated guess.

Alexxx [7]3 years ago
3 0

Answer:

A

Explanation:

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timama [110]

Answer:

Please find the explanation below

Explanation:

Sexual reproduction is the kind of reproduction that requires two organisms (male and female) to form an offspring. The male organism produces gametes called SPERM while the female organism produces gametes called EGG. These two gametes come together in a process called FERTILIZATION to produce a zygote, which develops into an offspring.

In sexual reproduction, gametes are produced by organisms involved via a process called MEIOSIS. Meiosis, however, reduces the chromosome number of the gametes by half. However, one process unique to only meiosis and sexual reproduction is called CROSSING OVER.

Crossing over is the process whereby chromosome segments is exchanged between non-sister chromatids of homologous chromosome. This process causes a recombination of chromosomes (alleles) in such a way that the gametes will be genetically different from the parent organisms (genetic variation). According to this question, sexual reproduction leads to more genetic variation than asexual reproduction due to the process of CROSSING OVER that occurs in sexual reproduction.

4 0
3 years ago
What are the dominant producers in the taiga ecosystem?
iVinArrow [24]

Answer:

B

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3 0
3 years ago
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Why are small quantities of chlorofluorocarbons so harmful to the ozone layer?
ikadub [295]

Answer:

The chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production. ... Free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone.

8 0
3 years ago
Fill in the blank with the missing word. Be sure to use correct spelling
sergij07 [2.7K]

Answer:

I think it's

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3 0
3 years ago
The conversion of liquid water into gaseous water is called?
Scilla [17]

Answer:

vapourization

Explanation:

When the water is heated, it changes into water vapour which is called vapourization or sometimes we can also call it evaporation.

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