Plants cannot grow without
a. rocks
c. moss
b. soil
d. pesticides

b. soil

Explanation:

The plants cannot grow without soil. The plants being the most important living being on earth are dependent upon abiotic or non-living factors for their survival these factors include the soil, water, air and others.

The plants obtain nutrients and water from the soil. The soil is a aggregate of minute particles of inorganic and organic minerals and water which are essential for the growth of plants.  

significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.