BIOLOGY MIDDLE SCHOOL

What is leaching? Please answer quickly

Answers

Answer 1
Answer:

To drain away from soil
Answer 2
Answer: to drain, filter, strain, to dissolve

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Which is not a kingdom in the Eukarya domain?A. ArchaesB. Protistooc rungiD. Plantae
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What is Laslow's hierarchy?
what is the probability of rolling a 2 on 6 sided die ?what is the probability of rolling two 2's on two six-sided die? how is the probability used in the study of genetics?

Mushrooms, algae, and protozoa are all examples of ___________ cells. A) eukaryotic B) fungal Eliminate C) plant D) prokaryotic

Answers

The answer to this question is A. Eukaryotic
Eukaryotic cells are distinguished by membrane-bounded organelles that contain genetic information and protected by nuclear protein.
In this place,  DNA is combined together by proteins and placed accrodingly into the chromosomes.
I just took this test and the answer is A. eurkroyatic cells

Devise a serial dilution scheme to prepare 1/20, 1/40, and 1/80 dilutions of a disinfectant

Answers

Answer:

The serial dilution can be done by half- logarithmic dilution method.

Explanation:

  • This is also called the Ten-fold dilution method.
  • The process involves the following steps, and the volumes represented are arbitrary.
  1. From the concentrated solution of the disinfectant take 1 ml of disinfectant in a falcon tube. 9 ml of water is added to that. Here we get a solution which is  (1)/(10) diluted.
  2. Take 1 ml of the above (1)/(10) diluted solution in another falcon and add 9 ml of water to it. Here we will get a solution which is  (1)/(20) diluted.
  3. Take 1 ml of the above (1)/(20) diluted solution in another falcon and add 9 ml of water to it. Here we will get a solution which is  (1)/(40) diluted.
  4. Take 1 ml of the above (1)/(40) diluted solution in another falcon and add 9 ml of water to it. Here we will get a solution which is  (1)/(80) diluted.

Final answer:

To prepare a serial dilution, you start with the stock solution and dilute it step-by-step. For a 1/20 dilution, take 1 part solution and add 19 parts solvent. For a 1/40 dilution, dilute the 1/20 solution further by taking 1 part of the 1/20 dilution and adding 1 part solvent. Similarly, for a 1/80 dilution, take 1 part of the 1/40 dilution and add 1 part solvent.

Explanation:

To prepare a serial dilution, you start out with a stock solution (in this case, the disinfectant) and dilute it step by step. To prepare the 1/20 dilution, you take 1 part stock solution and add 19 parts solvent. Then for a 1/40 dilution, you can dilute the 1/20 solution by a further factor of 2: take 1 part of the 1/20 dilution and add 1 part solvent. The same principle applies for the 1/80 dilution: take 1 part of the 1/40 dilution and add 1 part solvent, or you could take 1 part of the original stock solution to 79 parts of solvent.

Learn more about Serial Dilution here:

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Help me please :): Steady state theorists support the perfect cosmological principle, which suggests the universe looks the same from all directions, but over time.

Answers

Answer:

The correct answer or fill in would be- but Change and evolve over time.

Explanation:

The perfect cosmological principle is a extended version of the cosmological principle. The perfect cosmological principle says that the universe is look same from all directions but can be change and evolve with time.

Steady state theory supports this theory as it also says that universe is expanding but also maintain its density even though it continuously creates stars and galaxies but still look same.

Thus, the correct answer is -but Change and evolve over time.

PLEASE HELP!!!!When plants make their own food, what type of gas is needed for this process?

A.carbon dioxide
B.oxygen( ? I think this is it?)
C.hydrogen
D.nitrogen

Answers

Chlorophyll can make food the plant can use from carbon dioxide the answer is A. Carbon Dioxide

Answer:

A carbon dioxide because the plants need carbon dioxide

In an area in which electricity costs 8 cents/kilowatt-hour, a 5 kW clothes dryer runs for 90 minutes to dry a load of laundry. How much did it cost to dry these clothes?A. $0.20
B. $0.30
C. $0.45
D. $0.60

Answers

D $0.60 because (5kW)x(90/60hours)x(8cents/kWh) = $0.60 --> D

Answer:

D

Explanation:

How are the respiratory and circulatory systems similar? Both systems provide glucose and other substances to cells.

Both systems regulate blood flow throughout the body.

Both systems help remove carbon dioxide from the body.

Both systems send messages to the nervous system for breathing.

Answers

The respiratory and circulatory systems are similar Both systems help remove carbon dioxide from the body. Thus, option "C" is correct.

How the respiratory and circulatory systems similar?

The respiratory system Circulates oxygen into the body and blood needs oxygen the circulatory system circulates all the blood in your body in the works together with the respiratory system.

Thus, option "C" is correct.

To learn more about the respiratory system click here:

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Answer:

Both systems help remove carbon dioxide from the body.

Explanation:

I just took the test

Other Questions
Sediments that are eroded and deposited must go through _______ before becoming sedimentary rock.
Which of the following questions would someone ask if they were considering buying organic products? A) Where was the farm located geographically? B) Were chemicals used to enhance production? C) Why do some farms choose to use pesticides?D) What irrigation system was used on the farm?
The image shows a paramecium and a bacterium. One of these organisms is very good at rapidly adapting to environmental changes because it has the ability to take in stray genetic information from the environment. Which structure allows the organism to do this?
Which process is responsible for the growth of and repair of human tissue