To the best of my knowledge, a cairn is a pile of stones. They are used all over the world as marks for graves, passages, or settlements. These cairns have no relationship to animals or biological diversity.
electromagnetic waves do not require medium for their propagation. such as radio waves.
Mechanical waves require a medium for their propagation whereas electromagnetic waves require a medium for their propagation.
Electromagnetic waves do not require medium for propagation.
All biological activities require energy?
One disadvantage of vegetative propagation is that it can lead to a loss of genetic diversity within a population, making the plants more susceptible to diseases and environmental changes. Additionally, some methods of vegetative propagation, such as cuttings or grafting, can be labor-intensive and require specific skills and resources.
No, i wont describe it...Ok, i will cock+your ass=a lot of pain (scream propagation)
Rootkit
generally electromagnetic wave does not require any medium while sound waves require a medium (air) for propagation
Most animals in the kingdom Animalia are aerobic, meaning they require oxygen to survive. Oxygen is essential for cellular respiration, which provides the energy needed for various biological processes in animals.
A Sound wave, water wave, earth quake wave. Electromagnetic waves (radio, light, etc.) do not require a medium for propagation.
Electromagnetic waves (like light) don't require a medium for propagation, unlike mechanic waves (like sound).
these are waves that do not require or need material medium for its propagation, but they travel successfully in free space{vacuum}