Aresearcher uses several procedures to separate a rock sample into different chemicals. a mass of 50 grams of one chemical is produced. if this chemical cannot be separated into other chemicals, then it is best described as
select one:
a. a compound.
b. a mixture.
c. a solution.
d. an element.

the areas around the equator

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.