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masha68 [24]
3 years ago
15

What describes nuclear division in stem cells?

Biology
2 answers:
Mekhanik [1.2K]3 years ago
6 0
I think the answer is A.
pochemuha3 years ago
5 0
The answer is Mitosis
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What discovery could provide evidence against the theory of evolution?
Viefleur [7K]
A discovery that could provide evidence Against the theory of evolution is: If a primate and a trilobite fossil were found in the same rock layer. Because if that were to happen, then that means that trilobites and primates were from the same time frame, and it also means that primates did not evolve that they were the same since they first lived on the earth.

I Hope This Helped!
8 0
2 years ago
Describe how physical and chemical changes affect mass
AlladinOne [14]

Answer:

Explanation:

Matter can change form through physical and chemical changes, but through any of these changes matter is conserved. The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass.

5 0
2 years ago
Which system is represented by the diagram below?
Luba_88 [7]
Pretty sure that the endocrine system is represented by the diagram

So the answer is endocrine
6 0
2 years ago
Simone is training for a swim race. How can she make sure she always trains at the same speed of 2 miles per hour? Check all tha
Kipish [7]

Answer:

B. Every point on the line is an equivalent ratio.

C. As the line goes up, the speed increases.

D. Simone can pick any ratio on the line and she will be swimming at a rate of 2 mph.

Explanation:

If the line on the graph has equivalent ratio, it shows that the Simone swim at the speed of 2 mph. If the line on the graph goes up , it means the speed of swimming increases while when the line on the graph goes down, the swimming speed decreases so maintaining the speed of 2 mph, the line have to go horizontally in straight line. If Simone can pick any ratio on the line present on the graph so she has to swimming at a rate of 2 mph.

5 0
2 years ago
Which point in this graph shows the beginning of a period of exponential
IgorLugansk [536]

Answer:

C. Point B

Explanation:  

The exposed curve represents a logistic growth model. Population growth depends on density. Natality and mortality depend on the population size, meaning that there is no independence between population growth and population density.

When a population grows in a limited space, density rises gradually and eventually affects the multiplication rate. The population per capita growth rate decreases as population size increases. The population reaches a maximum point delimited by available resources, such as food or space. This point is known as the carrying capacity, K.

K is a constant that equals population size at the equilibrium point, in which the natality and the mortality rate get qual to each other.

Referring to population size as N, when

  • N<K, the population can still grow.
  • N approximates to K, the population´s growth speed decreases.
  • N=K the population reaches equilibrium,
  • N>K, the population must decrease in size because there are not enough resources to maintain that size.  

The sigmoid curve represents the logistic growth model.

  • Point A: During this period, the population size is relatively stable. Little growth is expressed.
  • Point B: At the beginning of this period, population growth increases softly. The more individuals are in the population, the more that reaches sexual maturity and get to reproduce, leaving fertile offspring. This fertile offspring also get to reproduce and leave more fertile individuals. At the end of the period, the curve shows a sharp slope, reflecting the significant increase in the population reproductive rate.  
  • Point C: At the beginning of this period, the population keeps on growing exponentially. But at the end of the period, the curve tends to stabilize, meaning that the population stops growing in size so fast. The population slow and gradually reaches the equilibrium point, K.
  • Point D: The population got to stabilize.
7 0
2 years ago
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