How can biologic weathering result in chemical weathering ?

A. Bacteria release acids and other agents that break down rock

B. Large herds temple rocks and break up soil

C. Root loosen soil and break rock

Which fact supports the conclusion that there will be fewer farm managers in the future? a) a farmer manager’s duties vary by the type of farm. b) farm technology is replacing some administrative jobs c) farm managers often need experience but not education. d) administrative duties include budgeting and training staff.

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?