. Scientists have observed that when oceanic plates and cotinental plates collide, the oceanic plate is driven under the continental plate. The MOST LIKELY reason for this phenomenon is -
the continental plate is wider than the oceanic plate.
the oceanic plate is more dense than the continental plate.
the convection currents in the mantle.
water applies a downward force on the oceanic plate

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

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.

Which is not a characteristic of bacteria? a. they are unicellular. b. they are prokaryotic. c. they are the smallest form of life on earth. d. they are multicellular.