A molted external skeleton.
Pharyngeal constrictor muscles (superior, middle and inferior)
The pharyngeal constrictor muscles are a group of muscles that form the lumen of the pharynx. After you swallow, an act that you have control, it starts a involuntary contraction by these muscles to propel the bolus downwards.
A testable question is B. If a plant is turned upside down, which way will the roots grow?
The other options are incorrect because you cannot create some kind of experiment to prove them right or wrong.
Hope that helped you.
Answer:
-1.Cold air sinks,has high density,and creates areas of low pressure.
-2.Warm air rises,has low density,and creates areas of high pressure.
-3.Wind is the movement of air from an area of high pressure to an area of low pressure.
-4. The angle of the earth affects the amount of energy an area receives
-5.More sunlight reaches the Earth at the equator
-6.Topics(near the equator) have warm air that rises,creating areas of high pressure.
-7.North and South poles have low air that sinks,creating areas of high pressure.
Explanation:
I just let y know that I don't now if I'm right or not
Fungi eat the dead plants aka nutrients to stay alive
