I would say extreme temperatures.
Answer:
If you watch carefully how the amoebas move, you're likely to find legs squirming and wiggling around trying to cover space. So this proves amoebas are alive.
Explanation:
Amoebas are living organisms belonging to the kingdom Protista. They are single-cellular organisms that move by extending and moving pseudopodia, extensions of their cellular membrane.
Observation because it says that the container is filled to the 350ml mark of water.
Answer:
The correct option is B. Vibrational motion
Explanation:
When an element or a substance is given heat, the molecules present in the element or substance start to vibrate. These vibrations cause the molecule to move back and forth with a certain force. If continuous supply of heat is given then the molecules will move so vigorously that the element or substance would expand.
When the supply of heat is reduced, the vibrations in the molecules of an element or substance would reduce.
Answer:
Melatonin.
Explanation:
The melatonin hormone is been secreted by the pineal. And this happens in hours of darkness in a mammalian body especially during the sleep-wake cycle. Also the compound named pinoline is also said to be produced in the pineal gland, and it is one of the beta-carbolines. Though it is not totally proven and still arguable.
But still on the melatonin's case, it functions also in the central nervous system. Its working process is been explained as when light sensitive nerve cells found in the retina denotes light and transfers this signal to the suprachiasmatic nucleus and other parts of the nervous system.
