Answer:
The soil is called chernozem. The grasslands are known as steppes and they are found between the Ukraine and Russia.Together with the forest -steppe, the steppes form the chernozem belt, the agricultural heartland of Russia. The forest-steppe is black chernozem soil, high in organic matter (OM) and minerals, and better watered than the steppe.
Explanation:
Answer:
Corals reef is a underwater ecosystem that builds on limestone beds, CaCo3
Explanation:
- They have exoskeletons made up of limestones and its possible that the corals might have moved offshore with changes in the sea levels as, he finds an abundance of large clam fossils, that produce within the interlocking of limestone section.
- Since the clam is made up primarily of coral fragments its possible that the corals might have buried under the landmass when the upliftment was completed.
- The skeletal remains of the coral polyps that are now stratified in the rocks are suggestive of reef formation around the landmass earlier period and these were mostly found in tropical oceans.
- Thus as he moves away and sees limestones with shales, which has clam fossils he had seen previously.
Corn, Wheat, Rice.
Usually a crop that has a high demand, Also check out Green Revolution too
Around 1800 (plus or minus about 5 years) is when it was estimated that the world's population had reached 1 billion.
