Kidney stones are mainly formed by which of the following compound ?
[a] sodium chloride[b] silicates[c] calcium bicarbonate[d] calcium oxalate

Is it considered muscle s ennervation if sympathetic fibers innervate the vessels within the muscle?

For their summer holiday, jane and her family are visiting places surrounding the mediterranean sea. which type of biome is jane and her family visiting? a. rainforest b. shrubland c. tundra d. coniferous forest

How does a gymnosperm prevent itself from pollinating the same tree