Answer:
Redbeds indicate the presence o iron in the environment. Red beds are red sedimentary rocks and the color is due to the presence of the ferric oxides. Ferric oxides occur as a coating on the sedimentary grains. In between the shale and cherts, iron-rich sediments can be found.
Explanation:
<span>Direct election of senators to Congress occurred because of the 17th constitutional amendment.</span>
Answer:
pls mark me as brainliest
Explanation:
Calicut became recognized because of the discovery of the sea route to India in 1498 by the Portuguese navigator Vasco Da Gama. It became the centre of a very active and prosperous trading port.
Answer:
1. Most common causes---- Mercury, nitrogen and phosphorus, pesticides, dissolved metals (excluding mercury) and PCBs (industrial pollutant)
2. Least common causes---- pH changes
, sedimentation and hypoxia.
Explanation:
The most common heavy metals that causes pollution are chromium (Cr), cadmium (Cd), lead (Pb), nickel (Ni), arsenic (As), mercury (Hg), zinc (Zn) and copper (Cu). Nitrogen and phosphorus application pollutes the water due to its leaching nature. The use of pesticides is very common in agriculture that cause more pollution. Pollutant comes from the industries cause water pollution and is responsible for a number of diseases.
Answer:
They will live with the consequences of our actions
Explanation:
