Ferns are located in which zone of deciduous forests?
a. tree stratum
b. small tree and sapling
c. shrub
d. herb

A fern is a vascular plant that have neither seeds nor flowers. Fern spieces live in the variety of habitats: shady forests, acid wetlands and tropical areas. Tree stratum zone contains the tallest trees. The small tree zone is lower than tree stratum zone. The shurb zone contains schurbs which grow the food for animals. Finally, the herb layer is made up of wildflowers and ferns. D ) Herb zone.

I'm not sure what your asking buddy.. but i know that you can weld two peices of steel by pure force and pressure.

Ohm's law tells you that i = v/r where v is equivalent voltage and r is equivalent resistance of the circuit
since all circuits have the same voltage, your question is really asking which circuit has the lowest total resistance, since the lower the resistance, the higher the current
circuit a has a resistance of 5 ohms; circuit c is in series so has a resistance of 10 ohms; circuit b is in parallel and therefore has a resistance of 2.5 ohms (review your notes on adding resistances in parallel and series); therefore b has the highest current