Multiple send combined messages to a bipolar cell, whereas a single may link directly to a single bipolar cell.

Multiple RODS send combined messages to a bipolar cell, whereas a single _CONE may link directly to a single bipolar cell.

Explanation:

The rods and cone cell are photoreceptive cells in the eye. The Rod cells are sensitive to coloured lights stimulus, while the Cones cells are sensitive to black and white stimulus.

1: most common garden plants prefer loam — soils with a balance of different-sized mineral particles (approximately 40% sand, 40% silt, and 20% clay) with ample organic matter and pore space. however, some plants grow better in sandy soils, while others are well-adapted to clay soils.

2: available water capacity is the maximum amount of plant available water a soil can provide. it is an indicator of a soil's ability to retain water and make it sufficiently available for plant use. available water capacity is the water held in soil between its field capacity and permanent wilting point.

3: it is the same for all living things (plants and animals). it also includes very tiny organisms that our eyes cannot see. they are known as microorganisms, and include viruses, bacteria and fungi.