Author Question: Earthworms are repelled by the high concentrations of nutrients in soils treated with synthetic ... (Read 35 times)

kshipps · **on:** Aug 27, 2018

Earthworms are repelled by the high concentrations of nutrients in soils treated with synthetic fertilizers. How might this affect the soil structure?

A) The soil becomes less fertilized by bird droppings.
B) The soil becomes more compact.
C) As the worms leave, insect larvae take over the role of making the soil porous.
D) Decaying dead worms are an important component of soil compost, which is why soil without many worms is less fertile.

Question 2

How does a catalyst increase the rate of a reaction?

A) It lowers the activation energy.
B) It is neither created nor consumed in a reaction.
C) It has nothing to do with the rate of reaction.
D) It increases the energy difference between the reactants and products.
E) It raises the activation energy of the reactants, which makes the reaction proceed faster.