Answer:
(a) Allow movement in only one plane/direction (that is extension or flexion)
(b) The skeletal system also produces blood cells in their bone marrow
Exactly true ... We never use our talents in our life... even if we use talents, we are incapable of living with it...
Such a great thought.... May God bless you... :)
The answer would have to be A) because cold air is dense so it is able to quickly plow a warm air mass ahead of it.
Answer:
Mutations rarely occur
Explanation:
Mutations are genetic changes, i.e., alterations in the DNA sequence. Generally, mutations have deleterious effects, but there are exceptions where mutations may confer an adaptive advantage in a given environment. Mutations are often deleterious, and thereby these genetic changes are rare events. In consequence, mutation rates, i.e., the frequency by which new mutations arise in an organism over time, are generally very low. Finally, mutations that arise only in germ cells can be inherited from a generation to the next generation, while somatic mutations cannot be inherited.
plant cells have a cell membrane and cell wall for support, but animal cells do not have cell walls
