input question: Answer this question: What is Ischemia or infarction?????
output answer: Ischemia is generally caused by problems with blood vessels , with resultant damage to or dysfunction of tissue.

input question: Answer this question: what does 1 year mean to the planet????
output answer: During one orbit around the Sun, the Earth rotates about its own axis 366.26 times, creating 365.26 solar days , or one sidereal year .

input question: Answer this question: how was color introduced in film?????
output answer: The first color cinematography was by means of additive color systems such as the one patented in England by Edward Raymond Turner in 1899 and tested in 1902.

input question: Answer this question: What is Ischemia or infarction?????
output answer:
In medicine , ischemia, also spelled as ischaemia or ischmia, (; from Greek language , ischaimia; isch- root denoting a restriction or thinning or to make or grow thin/lean, haema blood ) is a restriction in blood supply to tissues , causing a shortage of oxygen and glucose needed for cellular metabolism (to keep tissue alive).