Amino acids, sugars, and ions move<span> across </span><span>the cell membrane</span>
A good topic idea that could be used can be about ecosystems. Such as how geographic area, plants, animals, weather and landscape make up the types of organisms in that specific ecosystem.
Cell differentiation: when a stem cell changes to a specialized one.
Which two mineral samples would be most
difficult to distinguish from each other based on
their color, luster, and streak?
diamond
Talc is the softest and diamond is the hardest. Each mineral can scratch only those below it on the scale.
