To know where it rightfully belongs to. Variation of certain traits is caused by multiple factors of an individual of the same kind. Depending on their physical appearance, their environment and nature of survival.
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Answer:
D
Explanation:
If a group of organs working together is called an organ system, and there are about 11 major body systems including the nervous system, the nervour system must be an organ system.
Answer:
Started in China it spread through people that went to visit other places or items that were manufactured there were contaminated
Answer:
sustancia formada por dos o más componentes unidos, pero no combinados químicamente. Las mezclas homogéneas no se pueden diferenciar a simple vista. Se conocen como soluciones que contienen un soluto y un solvente; por ejemplo, la sal mezclada con agua
Explanation:
