Answer:
cell walls, vacuoles, chloroplasts, centriole
Explanation:
Plant cells have cell walls, one large vacuole per cell, and chloroplasts, while animal cells will have a cell membrane only and several smaller vacuoles. Animal cells also have a centriole, which is not found in most plant cells.
An ultrasound can produce the image of a fetus by using waves that are labeled as "ultrasound waves" or in ultrasonic frequency.
This may seem like an odd concept but you should note that everything we see and hear is made up of waves, like light and sound, that are at different frequencies.
The reason why there are different color lights are because there are different type of frequencies. Some frequencies, such as ultrasonic, we can not see with our human eye.<span />
The correct answer is B (Equilibrium).
Diffusion will continue to occur until a state of equilibrium is attained.
Diffusion is the movement of molecules from areas of high concentration to areas of low concentration. The molecules will tend to move into any space available until they are evenly distributed throughout this space.
When there is no longer a concentration gradient, there will be no net movement of molecules from one area to another. This state is known as dynamic equilibrium.
