The aquifer which will be most effective in purifying polluted ground water is AN AQUIFER COMPOSED MAINLY OF SAND.
An aquifer refers to a zone of permeable rock strata which transmit ground water freely. An aquifer must be permeable and porous. Ground water can be extracted from an aquifer by using a water well.
Answer:B. Sunlight provides energy to producers
Explanation: photoautotrophs (plants) produce energy from sunlight by photosynthesis. This is the only energy production based on an external source of energy. Plants, whether alive or dead, are consumed by heterotrophs - bacteria, fungi and animals. The nutrients and energy from dead heterotrophs (and some live ones) are recycled by both autotrophs and heterotrophs.
1 earth axis 2 sunlight 3 elevation
Lymph is the excess blood plasma after it is filtered from interstitial fluid, when the interstitial fluid is formed. From the circulation system, after filtration, lymph is comes into to the Lymphatic system.
The Lymphatic system with its tubular vessels, is an open system. It conducts lymph between various parts of the body. It provides a route for the excess interstitial fluid to be returned back to blood.
On the other hand, Our cardiovascular system - responsible for circulation of blood - is a
closed system. Blood never leaves the veins, arteries, and capillaries.
