Psychic stimulants include caffeine, cocaine, and various amphetamines. These drugs are used to enhance mental alertness and reduce drowsiness and fatigue.
Answer:
The correct answer is option 1. "Amplitude".
Explanation:
Waves of sound have different properties, among them amplitude is the one that determines the loudness or volume of the sound. The amplitude is the height of the wave, measured in meters, or in other word the maximum displacement of the sound's particle from its position of equilibrium. If a dolphin calling sounds louder because of the background noise, the waves of the sound that the dolphin produces would have a higher amplitude.
Pardon? I don’t understand the question
Answer:
A dominant trait is a trait that overpowers, a recessive trait is more rare.
Explanation:
Dominant traits are the most common trait in a pair. They will be seen the most often in offspring. Recessive traits are usually repressed traits that the parents had that were not previously visible
The trends that shows the increasing use of renewable energy are:
- Houses and cars powered by solar energy
- Use of geothermal energy in areas with hot water springs
- Construction of wind energy farms in sea
- Research for cheaper and efficient material for solar cells and batteries
- Construction of dams to harvest kinetic energy of flowing water
- Research for alternative biofuels from the leftover husk of crops.
