Question 1
which ion has a charge of 2+?
an ion with 10 protons, 9 neutrons, and 8 electrons
an ion with 8 protons, 10 neutrons, and 8 electrons
an ion with 8 protons, 9 neutrons, and 10 electrons
d
an ion with 10 protons, 10 neutrons, and 10 electrons

What condition is kept close to its set point in osmoregulation? a. body temperature b.platelet count c.blood glucose level d.water balance

Which of the following is a true statement? a. individuals evolve to have adaptations. b. individuals have adaptations that can change over time. c. individuals have traits that may or may not make them successful at reproduction. d. populations cant evolve, only individual organisms.

10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii