Answer:
A. organisms die or leave an area
Scientists used fruit flies as their model organism since they share 75% of the genes that cause disease with humans. Credit to taskmasters for this answer.<span />
Answer:A plane's engines are designed to move it forward at high speed. That makes air flow rapidly over the wings, which throw the air down toward the ground, generating an upward force called lift that overcomes the plane's weight and holds it in the sky. ... The wings force the air downward and that pushes the plane upward.
Here are some examples:
LiF-Lithium Fluoride
LiCl-Lithium Chloride
LiB-Lithium Bromide
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