WILL GIVE Pluto was downgraded to a dwarf planet in 2006. A group of scientists have studied Pluto and noted down its characteristics in the chart below. Characteristics of Pluto Orbits the sun Is large enough for gravity to give it a round shape Has no other object in its neighborhood Has a moon Which of these characteristics would best justify that Pluto is a planet? Characteristic 1 Characteristic 2 Characteristic 3 Characteristic 4

What process allows for the development of haploid sex cells? mitosis meiosis fertilization pollination

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.

Explain the significance of the increased cell specialization of the volvocine line