Answer:
A community of living organisms/creatures that "live an interact with each other in a specific environment".
Explanation:
This definition is on g00gle.
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Answer:
Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome. When cells divide during meiosis, homologous chromosomes are randomly distributed to daughter cells, and different chromosomes segregate independently of each other.
Explanation:
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Answer:
It helps to move the blood from the lungs to heart.
The three states of matter are solids, liquids, and gases. Sometimes, in extreme environments, there is plasma.