Answer: A. Chemical signal
Explanation:
Chemical signal is the type of communication which coordinates actions between neighboring cells
.
This ability originated in single cells organisms and was essential for the evolution of multicellular organisms because after a cell receives a message, it is transferred across the plasma membrane and changes are brought about within the cell in response to this message.
1. Energy
2.tri-phosphate
3. bond
i take AP bio so make this a brainliest answer
Students are investigating the distribution of dandelions using quadrats. The students could during their investigation is they can do the pH test and the effect if it is happening or not.
<h3>What is pH?</h3>
pH is the measurement of the acidity or alkalinity of a substance. PH is a scale that marks from 0 to 12. The substance above 7 is acidic and the substance that is basic comes after 7. 7 is the number for neutral, which is pure water. The pH test is very easy to conduct.
To be sure that pH of the soil will not affect the distribution of dandelions. They first test the pH of the soil.
To learn more about pH, refer to the link:
brainly.com/question/1979364
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<h3><u>Answer;</u></h3>
A. continuation
Agricultural lobbyists have been urging the <u>continuation</u> of farm subsidies.
<h3><u>Explanation</u>;</h3>
- Farm subsidies also known as the agricultural subsidies, are payments and other kinds of support that is extended to certain farmers and agribusinesses by the U.S. federal government.
- The original aim of these subsidies was to provide economic stability to farmers during the great depression to ensure a steady domestic food supply to Americans.
