Q: Excretion of ions occurs mainly through what organ? Choices: - Heart - lungs - tissues - kidneys A:
kidneys
------
Q: What is the type of cell division where the number of chromosomes is reduced in half? Choices: - cloning - mitosis - interphase - meiosis A:
meiosis
------
Q: What system of the body is responsible for producing hormones? Choices: - nervous system - regulatory system - homeostasis system - endocrine system A:
endocrine system
------
Q: Mercury is small, rocky and covered with what objects? Choices: - rivers - volcanoes - diamonds - craters A:
craters
------