Radiation is the mechanism of heat transfer by which heat travel in a straight line at the speed of light, allowing heat to travel through vacuums and air spaces.
Radiation in physics is the emission or transmission of energy in the form of waves or particles through space or matter medium. This includes:
- Electromagnetic radiation such as radio waves, microwaves, infrared rays, visible light, ultraviolet rays, X-rays, and gamma rays (γ)
- Particle radiation beams such as alpha rays (α), beta rays (β), proton rays, and neutron rays (with static energy non-zero particles)
- Acoustic Radiation such as ultrasound, sound waves, seismic waves (due to physical transmission media)
- Gravitational radiation in the form of gravitational waves, or waves of curvature of space-time
Radiation is often classified as either ionizing or non-ionizing, depending on the energy of the particles it hits.
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Answer:
only appear in veg plants
Explanation:
Unlike other forms of asexual reproduction in plants such as vegetative plant propagation via cuttings, apomixis is asexual reproduction via seeds. In the case of most dandelions (i.e., Taraxacum officinale), the embryo in the seed forms without meiosis, thus the offsping are genetically identical to the parent.
Answer:
The chromosomes move to a narrow central zone of the cell
Explanation:
Prophase: nuclear and cell membrane start to disappear
Metaphase: The chromosomes line up in the equator
Anaphase: Spindle fibres pull the chromosomes towards the poles
Telophase: Nuclear and cell membrane start to form
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Answer:
Sulfur can also fall directly from the atmosphere in a process called fallout. Also, the weathering of sulfur-containing rocks releases sulfur into the soil. These rocks originate from ocean sediments that are moved to land by the geologic uplifting of ocean sediments.