The first known pandemic in A.D. 542, struck which parts of the world?
Australia
Middle East
North America
South America
Asia
North Africa
Europe
Answer:
plant growth
Explanation:
The independent variable is the amount of water used, because the independent variable is what you change.
The dependent variable is what is measured, in this case plant growth.
Hopefully everything else in this experiment (location, temperature, food, soil, type of plant, etc) is the same. (Your constants). Otherwise, this is a flawed experiment.
The correct answer is option A, that is, placer deposits.
The concentration of heavy deposits known as the placer deposits are produced by the gravitational action, generally found in streams. The minerals that take place as placer deposits comprise copper, gold, magnetite, cassiterite, and copper.
The formation of placer deposits takes place when the metal-bearing rock on land is weathered and the generated debris is washed down to the sea by the rivers. Further by the action of waves, currents, and rides the particles of heavy metal gets amassed to produce mineral sand deposits. These generally occur as beach deposits.
