What happens at a tectonic plate boundary? A. Sea Floor Spreading Takes Place. B. An oceanic plate becomes a continental plate. C. Two Tectonic Plates interact with each other.

Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.

Which organisms have pharyngeal arches that develop from all three germ layers and go through the same development stages as embryos? 1.bird 2.ladybug 3.starfish 4.snake

Beth’s hygrometer is reading a temperature of 30 c and a relative humidity of 65%. the humidity in the air is?