Why do white camp-making bats need protection from the sun’s rays ().
A: They are active during daylight hours
B: Their heads are exposed to sunlight while they sleep
C: They have only partially adapted to their tropical environment
D: Their wings are easily damaged by ultraviolet radiation
A: They are active during daylight hours
B: Their heads are exposed to sunlight while they sleep
C: They have only partially adapted to their tropical environment
D: Their wings are easily damaged by ultraviolet radiation
举一反三
- Ultraviolet rays from the Sun can cause which of the following?
- The method in which the greenhouse effect takes place is by A: gamma radiation from the earth is absorbed into the atmosphere by particulates B: beta radiation from the Sun is absorbed by water vapor C: ultraviolet radiation from the Sun is absorbed by ozone D: infrared radiation from the Earth's surface is absorbed by multiple gases in the atmosphere E: cosmic radiation from deep space is absorbed by gases in the atmosphere
- The ultraviolet radiation from the sun can produce long-term effects on human beings and animals, but not on plants.
- Which statement was NOT mentioned about viewing an eclipse A: Sunglasses block out only a limited amount of the sun’s ultraviolet rays that can damage the eye. B: Sunglasses can only filter harmful rays during total solar eclipses at their greatest magnitude. C: Sunglasses tend to cause the center of the eye to enlarge allowing in more intense light. D: Sunglasses should be used when any part of the sun is visible.
- The accumulation of greenhouse gases (GHGs) causes global warming by letting sunlight into the atmosphere as _______. Then, when the earth re-radiates the heat back to space, the gases trap the energy in the form of outgoing ______. A: visible light, ultraviolet radiation B: infrared radiation, ultraviolet radiation C: ultraviolet radiation, infrared radiation D: infrared radiation, radio waves