Answer:
i'm like 100% positive its answer A
Explanation:
An example of force that acts at distance is gravity and an example of contact force is pushing a chair across the room
The vacuole helps the plant cell to maintain the shape of the cell by helping to maintain turbot pressure.
I suppose it is the density, having more pockets of air in between the granules of sawdust. Air has oxygen. What does a fire need to strive? Oxygen.
Answer:
Explanation:
Most fish rise and sink using this method, but not all do. Some species don't need a swim bladder because they spend all their life skimming along the ocean floor. Other fish, such as rays and sharks, ascend and descend by propelling themselves forward.
