Answer:
Myelin sheath increases the speed of electrical impulse along the nerve cells.
Explanation:
Myelin sheath is an insulting layer of proteins and fatty acids that are present around the nerves of brain and spinal cord.
Myelin sheath increases the speed of conduction of nerve impulse from one nerve cell to another cell. Myelin sheath is formed by the concentric wrapping of schwann cells around the axon. This sheath decreases axonal membrane capacitance and increases the conduction of nerve impulse.
Passive membrane processes are those that do not require energy and move substances down a concentration gradient; namely, these are diffusion, facilitated diffusion and osmosis.
Dirt would the the nutrition to the plants.
The sun would provide food for the plants.
Mushrooms would break down dead things.
Small animals would eat the food then defecate to provide more nutrients. (Caterpillar)
Plants get food from the sun, and provide for themselves such as a plant like a tomato or green been.
Species
of Homo _ erectus_<span> found in Java
suggest that this species of hominine spread rapidly after leaving Africa</span>
Answer: is the active acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the perception and recording of data via the use of scientific instruments. The term may also refer to any data collected during the scientific activity.
Explanation: hope that helps :)
