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dedylja [7]
3 years ago
6

He graph below shows the motion of a person. Describe the motion. *

Biology
1 answer:
geniusboy [140]3 years ago
6 0
D). The person is traveling at an increasing speed for 10 seconds and then travels at a constant speed for 15 meters per second for 10 seconds
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The process of cell division that creates sex cells in sexually reproducing organisms is called
Eva8 [605]
<span>The answer is "Meiosis".
 
Meiosis is a cell division process which forms four daughter cells which are different from parent cell. Formed daughter cells have half of chromosomes when compared to parent cells. Hence, Daughter cells are haploid (have single set of chromosomes). This process occurs in the sexually reproductive organisms and formed daughter cells can be either sperms or egg cells according to the gender of living being.</span>
5 0
3 years ago
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Salt dissolved in water? Physical or chemical
aleksley [76]

When salt and sugar dissolve in water it is a physical change. The chemical makeup of the salt and sugar are not changed.

Physical change

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3 years ago
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A unique feature of dna is that it can duplicate itself through a process called
Brut [27]
<span>A unique feature of dna is that it can duplicate itself through a process called replication.</span>
7 0
3 years ago
Explain how seasonal fires benefit grassland ecosystems.
Soloha48 [4]

Answer:

Without fires, there would be no life on Earth . Fires are key to maintaining the proper oxygen concentration in the atmosphere; fire regulates the carbon cycle and life, as we know it, is based precisely on carbon

Explanation:

Although we tend to think of fires as a human invention that kills plants, animals, people, fire, as with rain or wind, is an essential natural component, basic to maintain the planet's biodiversity.

As for example, grassland ecosystems are also benefited by the same fires that allow renewal, and generate natural sustainability on the earth through the carbon cycle.

3 0
3 years ago
Species A has a diploid number of 42 chromosomes, while species B has a diploid number of 48 chromosomes. Give the chromosome nu
Arada [10]

Answer:

a. autotriploid of species A: 63 chromosomes

b. autotetraploid of species B: 96 chromosomes

c. allotriploid from species A and B: 1) 66 chromosomes and 2) 69 chromosomes

Explanation:

<u>For a.</u>

this species will have 3 haploid sets of chromosomes ('tri' means 3)

one haploid set = 21

21 × 3 = 63 chromosomes

<u>For b.</u>

this species will have 4 haploid sets of chromosomes ('tetra' means 4)

one haploid set = 24

24 × 4 = 96 chromosomes

<u>For c.</u>

there are two ways to do this:

1) two sets of chromosomes from species A and one from species B

42 + 24 = 66 chromosomes

2) one set of chromosomes from species A and two from species B

21 + 48 = 69 chromosomes

Hope that answers the question, have a great day!

5 0
3 years ago
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