Since each myofibril is attached at either end of the muscle fiber, when sarcomeres shorten, the muscle fiber

A) lengthens.
B) shortens.
C) strengthens.
D) weakens.
E) pulls from the middle.

Which food could be transported in a galvanized metal container?

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite