Answer:
the correct answer is b: fluid
Explanation:
i did it and got it wrong and it gave me the correct answer
That should be the cell membrane. The cell membrane acts as a filter in and out.
Psychic stimulants include caffeine, cocaine, and various amphetamines. These drugs are used to enhance mental alertness and reduce drowsiness and fatigue.
Answer:
solids are more tightly packed together (the molecules) than liquid or gas so it allows it to travel through vetter/faster
Answer:
Corn Picker. In 1850
Cotton Gin.
Cotton Harvester.
Crop Rotation.
The Grain Elevator.
Hay Cultivation.
Milking Machine.
Plow.
Explanation:
there are some agriculture inventions
