Answer:
Through their adaptations from their habitat; environment
Explanation:
Charles Darwin explains evolution and their genetic material evolves during the process. For example, fruit birds have narrow bills whilst seed-eating birds have big bills. The foods they eat forced their DNA to adapt with the system in order to survive.
The last one. A bond of two or more of the same element.
Hi!
I believe there are 4 main chemicals in space uracil, cytosine, thymine, and pyrimidine :)
Answer: Atom/element
Explanation: Since matter cannot be created or destroyed, the number of atoms has to be equal on both sides of the equation.