Answer:
A.the foundation of most food chains.During photosynthesis plants let out oxygen and gain carbon dioxide from the atmosphere which intern helps plants to manufacture food.
Explanation:
Echolocation is one of the methods of orientation mainly used by the microchiropteran or insectivorous bats. While flying, these bats emit high frequency ultrasound. These sound pulses hit obstacles like rocks, trees, walls etc. and their echoes are heard by bats.
