1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
elena-s [515]
4 years ago
13

How do we know that earth,air,fire, and water are not elements

Biology
2 answers:
mart [117]4 years ago
6 0
We khow because this are the base of the other elements this can be related to the other elements like water H2O two hydrogen and oxygen are  like saying air and gas.
kakasveta [241]4 years ago
5 0
They are not from the periodic elements scientifically.
You might be interested in
????????????????????
lord [1]
B is the right answer
5 0
4 years ago
A gardener is installing several large flower beds. The flower beds will vary in length from 5 to 12 feet. Depending on the type
dezoksy [38]

The gardener should address the measurements he needs to make so that planting information is clear, and that the roots are spaced to grow.

<h3>How to calculate amount of landscaping plants?</h3>

 just divide the area of the bed by the area occupied by the seedling and we will have the total amount of seedlings to be used. In this way, we also understand that the area occupied by the seedling is equal to the spacing between seedlings raised to the square.

<h3>How to calculate the spacing between plants?</h3>

If we plant with a spacing of 0.60 meters, the number of seeds per meter will be calculated as follows: Being 1 hectare = 10,000 square meters and the spacing between rows of 0.60 m, we have the equivalent of a range of 0, 60 meters by 16,667 linear meters (10,000 divided by 0.60).

With this information, we can conclude that the area occupied by the seedling is equal to the spacing between seedlings raised to the square.

Learn more about seedlings in brainly.com/question/14852087

#SPJ1

8 0
2 years ago
A process in which chromosomal segments are exchanged between a pair of homologous chromosomes wordsearch
Ugo [173]
Chromosomal crossover
7 0
4 years ago
Do prokaryotic organisms carry out<br> cellular respiration? If so, how?
Stella [2.4K]

Hi

Do prokaryotic organisms carry out  cellular respiration? If so, how?

The answer is yes as well as no, because some prokaryotes like Archeae and some bacteria donot use cellular respiration because they are anaerobic. The Archaea are also known as Methanogens that reduce Carbon di oxide from environment to Methane that is eventually oxidized to NADH (that is used as an energy source).

However, there are some bacteria that use cellular respiration as a source for the energy production.Cellular respiration is a process which occurs in the cells of higher living organisms as well as in cells of some small organisms like Bacteria. During process of cellular respiration in bacteria, glucose is broken down with the help of oxygen into water and Carbon di oxide. In the process of cellular respiration, bacteria just like humans goes through three stepsi.e Glycolysis, Kreb cycle and Electron transport chain that ultimately lead to the production of ATP (energy).

Hope it helps!

5 0
3 years ago
In light of the pandemic we are living through, do you think vaccinations should be mandatory?
Komok [63]

Answer:

Yes, vaccination should be mandatory because without it all of us would slowly died from not having a cure. According to research people, they said; "vaccination will helps you to stay healthy. It also are important to your overall health such as diet and exercise."

Explanation:

7 0
2 years ago
Other questions:
  • A diagram that indicates the sequence of the evolution of important body plan features is a
    14·2 answers
  • Humans are warm-blooded. They are able to maintain a constant body temperature despite changing environmental temperatures. Whic
    12·1 answer
  • Give two function of the cell​
    10·2 answers
  • Which criterion is used to functionally classify neurons?
    8·1 answer
  • If a Killer whale is feeding at the fourth trophic level, how much phytoplankton mass is required to add each gram of new mass t
    11·1 answer
  • 1. According to the graph below, what temperature will result in the highest rate of photosynthesis? A. 5°C
    11·2 answers
  • 1.Nucleus is called the master of cell.why?
    9·1 answer
  • Natural disasters are what type of limiting factor?
    15·2 answers
  • A. Bone <br><br> B. Organ systems <br><br> C. Organs<br><br> D. Specialized cells
    13·1 answer
  • How do engineers use stem to create roller coasters
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!