Which phrase is the best description of weathering? a-compacting rocks b-cementing rocks together c-crystallizing to form minerals d-breaking rocks into fragments by physical or chemical means

Iwll give extra points to who gets this for ! what type of reaction is this? ?

Stage in which a typical star has completely stopped fusion

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon