Answer: Electromagnetic waves
Explanation: The main property of the waves is the way how they propagate or travel in medium The waves which can travel without a medium is said to travel in vacuum or air.
The steps that the U.S has recently taken to counter cyber crime include; Setting up a system of voluntary cyber-security standards, and also opening a new center dedicated to managing cyber activities. Cyber crimes are crimes that involves a network and a computer, a computer is used as an instrument of further illegal ends. Cyber crimes may threaten a person or a nation's security and financial health.
the answer is chemical reaction
By conserving the residential water by recycling we can keep the fresh water as a renewable resource.
<u>Explanation:</u>
Preserving water is significant on the grounds that it keeps water unadulterated and clean while ensuring the earth. Private water use incorporates both indoor and outside family unit water utilization. Water is utilized inside for showering, flushing toilets, washing garments, washing dishes, drinking, and cooking.
Open air water use incorporates washing the vehicle and watering the grass, pools, and plants. This water alludes to the procedure which prepared the wastewater and changes over it to a reusable structure. Additionally gather water during the blustery season to use in latrine flush, watering plants, sprinkle in the nursery, and so on. Utilizing crude water like seawater or non-cleaned water in the latrine is likewise acceptable.
