Asubstance that gives up an electron to a free radical is a

Is there any danger to eating mold?

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.