Can somebody with o+ type blood give to some one with o- and can it be done the other way around

O+ is a very favorable blood type. It can give to all other blood types. However, it can only receive O+ blood. So, if you have blood type O+, go donate some, and it is almost sure you will save a life.

O- can give to anyone but can only take o-
o+ can give to anyone but can only take o+

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.