Prepare solutions of different acid concentrations, measure 50 mililiters of each into different beakers, and place the same type of pill of the same mass into the beakers
Explanation:
Answer:
Nitrogen-fixing bacteria will significantly outnumber those incapable of fixing nitrogen
Explanation:
Nitrogen-fixing bacteria are capable of growing in a medium lacking organic Nitrogen. They convert (fix) atmospheric Nitrogen (Nitrogen is abundant in air) into organic substrates. Hence, they will grow in the enrichment medium described. This is the kind of medium used to isolate nitrogen-fixing bacteria.
Non-nitrogen fixing bacteria require an organic form of Nitrogen for growth. Hence, in a medium with no nitrogen, they will rely on the Nitrogen fixers. This means delayed growth for them.
A culture medium also has limited nutrients, so the slow growers will have little or no nutrients left.
Therefore, the Nitrogen fixers will have competitive advantage and significantly outnumber those incapable fixing nitrogen.
Answer:
The answer is C, Between 40 and 60 mg/kg
Explanation:
I just took the test and it was right :)
Answer:
Explanation:
Salt is soluble, meaning it can dissolve in water, while sand is not
Answer: Option B) All living organisms are composed of multiple cells.
Explanation:
According to the CELL THEORY
- the cell is the structural and functional unit of life
- all living organisms are made of cells
- all cells come from previously existing cells
- there is no life apart from the life of cells
- all living things are either single cells (unicellular) or group of cells (multicellular).
Thus, the correct statement is that all living organisms are composed of multiple cells
