D. the number of mates on the island
their appearance changes cause different birds breeding together can make an impact of how the bird looks
The exchange of useful chemicals between organisms and their abiotic environment is an example of matter cycling.
<h3>What is the matter cycling?</h3>
Matter cycling refers to the cyclic movement of matter between biotic factors and abiotic factors.
This process (matter cycling) is fundamental for the survival of organisms and health of an ecosystem.
In conclusion, the exchange of useful chemicals between organisms and their abiotic environment is an example of matter cycling.
Learn more about matter cycling here:
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Ionic bonds form always form between a metal and a nonmetal, so the answer is D, Magnesium and Bromine.
Sodium is a metal, so a bond between two Sodium atoms will not be ionic.
Fluorine is a non-metal, so a bond between two will be covalent bond instead of an Ionic.
Magnesium and Lithium are both metals, so a bond will not be ionic.
On the other hand, Magnesium is a metal and Bromine is a non-metal, so a bond between them will be ionic.
Answer:
25
Explanation:
In DNA, Guanine pairs with Cytosine, and Thymine pairs with Adenine. This tells us that there are equal numbers for each Guanine and Cytosine, and Thymine and Adenine. When there's 35 Guanine, there should be 35 Cytosine that goes with it. 120 - 2(35) = 50. The remaining 50 nucleotides are Thymine and Adenine, and since they are the same number, divide 50 by 2. 50 ÷ 2 = 25. There are 25 thymine in the sample of DNA.
