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3 years ago

Which event is an example of sexual reproduction in plants?

Biology

2 answers:

dsp733 years ago

7 0

Answer:

i think it is b

Explanation:

grin007 [14]3 years ago

4 0

Answer:

Mosses form spores in capsules

Explanation:

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Using the dichotomous key, which class does this animal belong to?

JulijaS [17]

The answer is a Reptile.

Because it lives in water (also out) and has rough skin.

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3 years ago

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Analyze the data about nitrogenous base content of DNA from various species. Percentages of Bases in Five Organisms Source of DN

Troyanec [42]

Answer:

When analyzing data on the nitrogenous base content of the DNA of various species, the claims are supported by the data:

In any one species, the amount of adenine closely approximates that of thymine.
In any one species, the amount of guanine closely approximates that of cytosine.
The amounts of A, T, G, and C in DNA varies from species to species.

(options A, B and D)

Explanation:

Organizing the data has to:

Source of DNA A T G C

Streptococcus 29.8 31.6 20.5 18.0

Yeast 31.3 32.9 18.7 17.1

Herring 27.8 27.5 22.2 22.6

Human 30.9 29.4 19.9 19.8

E. Coli 24.7 23.6 26.0 25.7

DNA is the molecule that contains the genetic information of each species, formed by sequences of nitrogenous bases Adenine, Thymine, Cytosine and Guanine.

Since Adenine and Thymine -as well as Cytosine and Guanina- are complementary, the percentage of them will be very similar in each DNA molecule.

The genetic information -which determines the physical and functional characteristics of each organism- is encoded in the DNA and is different for each species, so the percentages of nitrogenous bases vary from species to species.

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3 years ago

How does soil become enriched during soil formation? a. by weathering b. through erosion c. by decaying organisms d. all of the

Nata [24]

The answer is C, by decaying organisms

8 0

3 years ago

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What happens during radioactive decay, and what is the result at the end of radioactive decay

natulia [17]

Radioactive decay occurs when an atom has either to many or to few neutrons and becomes unstable and start to emit radio active radioactive radiation and the atom start to decompose.

At the end two things can happen either the atom will transform in a new element with a lower atomic # and atomic mass # or the remaining neutron will transform into an electron and be on its own way

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3 years ago

Bagaimana adaptasi tubuh manusia terhadap kadar oksigen yang rendah dipegunungan

never [62]

Persentase oksigen di udara di dua mil (3,2 km.) Pada dasarnya sama dengan di permukaan laut (21%). Namun, tekanan udara adalah 30% lebih rendah pada ketinggian yang lebih tinggi karena fakta bahwa atmosfer kurang padat - yaitu, molekul udara yang jauh apart.When kita menghirup udara di permukaan laut, tekanan atmosfer sekitar 14,7 pounds per square inch (1,04 kg. per cm.2)

(i speak indoinision to)

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3 years ago