EXERCISE An iron rod has 3.48 x 10-19 free electrons of which
70% are directed to move due east for a period of
12s. The rest however move randomly in the iron.
(a) Calculate the current produced,
(b) In what direction is the current flowing? (Charge
of electron, e = 1.6 x 10-19C)​

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.

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.