Final answer:
Frostbite occurs at a temperature of 0°C (32°F) or lower, causing ice crystal formation in the skin or tissues. For plants, frost damage is at temperatures below 28.0°F, equal to about 267 K on the Kelvin scale.
Step-by-step explanation:
Frostbite occurs when ice crystals form in the skin or deeper tissues after exposure to a temperature of 0°C (32°F) or lower. It is a serious condition that can lead to permanent damage to body tissues and requires medical attention. When it comes to plant life, frost damage usually occurs at temperatures of 28.0°F or lower.
To convert this temperature into Kelvin, which is the SI unit for temperature, you can use the formula: K = (F − 32) × 5/9 + 273.15. Thus, 28.0°F is approximately equal to 267 K on the Kelvin scale.