If you say that something is 3,000 light-years away, you are stating that
a. the object stopped producing light 3,000 years ago
b. the light that we see from the object traveled for 3,000 years before reaching our eyes
c. the object will begin emitting light in 3,000 years

Which of the following correctly describes the appearance of muscle tissue found in the heart? (2 points) single-nucleus, non-striated, short cells single-nucleus, striated, branching cells multinucleated, non-striated, branching cells multinucleated, striated, long threadlike cells