An igneous rock that has silica and the ferromagnesian matter has basaltic composition. It contains silicate dark materials caused by iron and magnesium. The elements such as <span>olivine, pyroxene, amphibole, and biotite are also present on this igneous rock. On the other hand, light colored have a different composition.</span>
Answer:
we need to focus on the 10 main threats to soil functions: soil erosion, soil organic carbon loss, nutrient imbalance, soil acidification, soil contamination, waterlogging, soil compaction, soil sealing, salinization and loss of soil biodiversity.
Explanation:
PLZ MARK BRAINLEST
The solid inner core is made of mainly iron crystals with small amounts of nickel and heavier elements such as gold and platinum. The liquid outer core is a nickel iron alloy with small amounts of heavier elements.
