BIOLOGY HIGH SCHOOL

a population ecologist determines the number of a oak trees per square unit in a forest. what is he trying to infer by doing so?

Answers

Answer 1
Answer: The population ecologist is trying to determine the density of the oak trees in a forest. It is a part of the job of a ecologist. By detecting the density of the oak trees, an ecologist can easily determine whether the density of the oak trees are decreasing or increasing with time and what are the steps that need to be taken to keep the balance.

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A company estimates its total profit (profit = total revenue minus total cost) as P(x) = 2x5 − 3x4 − 5x2 − 2, where P is in thousands of dollars and x is the number of years elapsed since the company was founded.Solve for the number of times the total profit become exactly zero. Hint: Use Descartes's rule of signs.
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Certain seismic waves travel as? A. electromagnetic and transverse waves.
B. visible light and longitudinal waves.
C. longitudinal and transverse waves.
D. compression and visible light waves.

Answers

It is C. There are two types of Seismic waves: P and S (primary and secondary) waves. S waves are transverse and P vawes are longitudinal waves.

Looking at a cell under a microscope, you note that it is a prokaryote, how do you know?A) The cell lacks cytoplasm.
B) The cell lacks cell membrane.
C) The cell lacks nucleus.
D) The cell lacks genetic material.

Answers

C) The cell lacks nucleus.

A Prokaryotic cell does not contain a nucleus. It only contains one chromosome and is a single-celled organism. It was the only form of life on earth for millions of years. Examples of a Prokaryotic cell are the different types of bacteria present today. 
A Eukaryotic cell contains a nucleus; more than one chromosome and is typically a multi-celled organism.  Both plant and animal cells are eukaryotic cells.

The characteristic feature of prokaryotes cells is that they lack the nucleus.

Further Explanation:

An ecosystem is made up of mainly two kinds of cells:

  • Eukaryotes cells: They mainly consist of a group of animals, fungi, and plants.
  • Prokaryotes cells: They mainly consist of bacteria and archaea.

The single-celled organisms such as bacteria and archaea are the prokaryotes. Cyanobacteria are an example of prokaryotes that synthesize their own food by the process of photosynthesis. The cellular organization of prokaryotes is very simple. Some main features of prokaryotic cells are:

  • They don’t possess membrane-bound organelles and nucleus  
  • The DNA of a prokaryotic cell is found in the cytoplasm of the cell which is mainly called the nucleoid.
  • The size of the cells is around 0.1 to 5.0μm in diameter.
  • The prokaryotic cell wall provides more protection than the eukaryotic cell wall. They also maintain the shape of the cell and provide protection against dehydration.

Learn more:

  1. Learn more about cell organelle brainly.com/question/5923583
  2. Learn more about the diffusion brainly.com/question/1386629
  3. Learn more about the plant brainly.com/question/862697

Answer Details:

Grade: High School

Subject: Biology

Chapter: Plant Cell

Keywords:

Photosynthesis, dehydration, eukaryotic cell, prokaryotic cell, cytoplasm, single-celled, organism, bacteria, archaea, animal, fungi.

Can someone help me find the answer to this?

Answers

The strand of GATATTGGCCCCATG is a DNA molecule.

The skeletal system does all of the following EXCEPT(A) support.
(B) transport.
(C) protect.
(D) digest.
(E) store.

Answers

The skeletal system does not digest. That is the job of the digestive system. Hope this helps!
Answer: (D) digest
Hope it helps!

Which of the following human activities does NOT release carbon dioxide into the atmosphere?Burning fossil fuels
Fishing
Deforestation

Answers

Fishing is a human activities that does not release carbon dioxide into the atmosphere.

What is human activities?

  "Human activities are the various actions for recreation, living, or necessity done by people."

What is carbon dioxide?

  • "Carbon dioxide (CO2) is an important heat-trapping (greenhouse) gas."
  • It is released through human activities such as deforestation and burning fossil fuels, as well as natural processes such as respiration and volcanic eruptions.
  • It is one of the greenhouse gases.

What is deforestation?

  • "The action of clearing a wide area of trees."

What are fossil fuels?

  • "Fossil fuels are made from decomposing plants and animals. These fuels are found in the Earth's crust and contain carbon and hydrogen, which can be burned for energy."

By deforestation and burning of fossil fuels large amount of carbon dioxide gases are released into atmosphere.

Hence, carbon dioxide is not released into atmosphere by fishing.

To learn more about carbon dioxide here

brainly.com/question/3049557

#SPJ2
The Fish does not give off Carbon Dioxide

differentiate between Acute and chronic diseases ...(minimum 5 points each)......pls help fast ....i have my exam tomorrow

Answers

Acute diseases are sudden, severe, and short term only. They quickly appear and worsen without warning and they disappear. Examples of this are flu or colds.  

Chronic diseases, on the other hand, are long-developing diseases. The symptoms have been present for long time and it worsens as time progresses. Examples of this are Osteoporosis and heart disease.
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