Most mammals are viviparous, giving birth to live young. However, the five species of monotreme, the platypuses and the echidnas, lay eggs. The monotremes have a sex determination system different from that of most other mammals. In particular, the sex chromosomes of a platypus are more like those of a chicken than those of a therian mammal. Like marsupials and most other mammals, monotreme young are larval and fetus-like, as the presence of epipubic bones prevents the expansion of the torso, forcing them to produce small young.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is the common mammal group that gives birth to live young?
Ah, so.. viviparous

Prompted by legislation in various countries mandating increased bulb efficiency, new "hybrid" incandescent bulbs have been introduced by Philips. The "Halogena Energy Saver" incandescents can produce about 23 lm/W; about 30 percent more efficient than traditional incandescents, by using a reflective capsule to reflect formerly wasted infrared radiation back to the filament from which it can be re-emitted as visible light. This concept was pioneered by Duro-Test in 1980 with a commercial product that produced 29.8 lm/W. More advanced reflectors based on interference filters or photonic crystals can theoretically result in higher efficiency, up to a limit of about 270 lm/W (40% of the maximum efficacy possible). Laboratory proof-of-concept experiments have produced as much as 45 lm/W, approaching the efficacy of compact fluorescent bulbs.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How much more efficient are Halogena Energy Saver bulbs compared to incandescents?
Ah, so.. 30 percent

As aristocrats for centuries, samurai developed their own cultures that influenced Japanese culture as a whole. The culture associated with the samurai such as the tea ceremony, monochrome ink painting, rock gardens and poetry were adopted by warrior patrons throughout the centuries 12001600. These practices were adapted from the Chinese arts. Zen monks introduced them to Japan and they were allowed to flourish due to the interest of powerful warrior elites. Muso Soseki (12751351) was a Zen monk who was advisor to both Emperor Go-Daigo and General Ashikaga Takauji (130458). Muso, as well as other monks, acted as political and cultural diplomat between Japan and China. Muso was particularly well known for his garden design. Another Ashikaga patron of the arts was Yoshimasa. His cultural advisor, the Zen monk Zeami, introduced tea ceremony to him. Previously, tea had been used primarily for Buddhist monks to stay awake during meditation.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Whose culture included tea ceremonies?
Ah, so..
samurai