Huygens was writing about the theory of light.
Answer:
Experiment to show that sunlight is necessary for photosynthesis - definition. Take a plant with destarched leaf. Leaf is partially covered with black paper on which a design is cut. Expose this plant to sunlight for few hours and perform a starch test with iodine solution.
Explanation:
I tried kiddo
Answer:
A portion of the Earth's atmosphere that protects the Earth from radiation
Answer:
I, II, III
Explanation:
A threshold stimulus is a stimulus that is capable to produce a response in excitable tissues such as neurons and muscle fibers. At threshold potential, the outward movement of K+ and inward movement of Na+ become equal to each other. When the potential exceeds the threshold potential, more and more Na+ enter the cell to depolarize it and to allow the opening of Na+ channels. Therefore, to fire an action potential, the threshold must be exceeded.
Conduction of action potential is all or none phenomenon which means that either it occurs or it does not occur. As an impulse is passed by each successive part of an exon, it enters the refractory period during which there is no conduction of nerve impulse. It ensures the one-way conduction of impulse from the cell body to the axon terminal only.
Respuesta:
La respuesta más simple posible sería decir que toda la red alimentaria colapsaría y todos los organismos de la red morirían de hambre. ... Eso es porque la vida vegetal suministra la energía inicial al sistema de la red alimentaria. Sin plantas, no hay alimento para los herbívoros.
¡Espero que esto ayude!
