When all plant structures have a set of chromosomes, it is called the gametophyte stage. a. haploid c. large b. diploid d. similar

Select all the true statements about the cosmic microwave background radiation

How does pregnancy begin? a) a placenta forms in the uterus b) a sperm reaches an egg in the fallopian tubec) the blastocyst differentiates into two cell types d) contractions begin in the uterine wallapex

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called