False because extrusive rocks have fine-grained texture due to the rapid cooling of magna above the earth surface. On the other hand extrusive rocks have course grained texture due to slow cooling of magna beneath the Earth's surface
One "fact" that is false about testosterone, is that some believe women do not need testosterone as part of their hormones. Alas, women do require testosterone, as without it, can cause numerous dilemmas with their health. For instance, a gain in body fat.